19781086680

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{313}}^1\times {\mathrm{359}}^1$

素因数の和:855

約数の個数: 256

約数和(自身を含む): 66738816000

約数和(自身を除く): 46957729320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 163, 180, 216, 270, 313, 326, 359, 360, 489, 540, 626, 652, 718, 815, 939, 978, 1077, 1080, 1252, 1304, 1436, 1467, 1565, 1630, 1795, 1878, 1956, 2154, 2445, 2504, 2817, 2872, 2934, 3130, 3231, 3260, 3590, 3756, 3912, 4308, 4401, 4695, 4890, 5385, 5634, 5868, 6260, 6462, 6520, 7180, 7335, 7512, 8451, 8616, 8802, 9390, 9693, 9780, 10770, 11268, 11736, 12520, 12924, 14085, 14360, 14670, 16155, 16902, 17604, 18780, 19386, 19560, 21540, 22005, 22536, 25848, 28170, 29340, 32310, 33804, 35208, 37560, 38772, 42255, 43080, 44010, 48465, 51019, 56340, 58517, 58680, 64620, 67608, 77544, 84510, 88020, 96930, 102038, 112367, 112680, 117034, 129240, 153057, 169020, 175551, 176040, 193860, 204076, 224734, 234068, 255095, 292585, 306114, 337101, 338040, 351102, 387720, 408152, 449468, 459171, 468136, 510190, 526653, 561835, 585170, 612228, 674202, 702204, 765285, 877755, 898936, 918342, 1011303, 1020380, 1053306, 1123670, 1170340, 1224456, 1348404, 1377513, 1404408, 1530570, 1579959, 1685505, 1755510, 1836684, 2022606, 2040760, 2106612, 2247340, 2295855, 2340680, 2633265, 2696808, 2755026, 3033909, 3061140, 3159918, 3371010, 3511020, 3673368, 4045212, 4213224, 4494680, 4591710, 5056515, 5266530, 5510052, 6067818, 6122280, 6319836, 6742020, 6887565, 7022040, 7899795, 8090424, 9183420, 10113030, 10533060, 11020104, 12135636, 12639672, 13484040, 13775130, 15169545, 15799590, 18315821, 18366840, 20226060, 21066120, 24271272, 27550260, 30339090, 31599180, 36631642, 40452120, 54947463, 55100520, 60678180, 63198360, 73263284, 91579105, 109894926, 121356360, 146526568, 164842389, 183158210, 219789852, 274737315, 329684778, 366316420, 439579704, 494527167, 549474630, 659369556, 732632840, 824211945, 989054334, 1098949260, 1318739112, 1648423890, 1978108668, 2197898520, 2472635835, 3296847780, 3956217336, 4945271670, 6593695560, 9890543340, 19781086680]

約数ペア:

[(1, 19781086680), (2, 9890543340), (3, 6593695560), (4, 4945271670), (5, 3956217336), (6, 3296847780), (8, 2472635835), (9, 2197898520), (10, 1978108668), (12, 1648423890), (15, 1318739112), (18, 1098949260), (20, 989054334), (24, 824211945), (27, 732632840), (30, 659369556), (36, 549474630), (40, 494527167), (45, 439579704), (54, 366316420), (60, 329684778), (72, 274737315), (90, 219789852), (108, 183158210), (120, 164842389), (135, 146526568), (163, 121356360), (180, 109894926), (216, 91579105), (270, 73263284), (313, 63198360), (326, 60678180), (359, 55100520), (360, 54947463), (489, 40452120), (540, 36631642), (626, 31599180), (652, 30339090), (718, 27550260), (815, 24271272), (939, 21066120), (978, 20226060), (1077, 18366840), (1080, 18315821), (1252, 15799590), (1304, 15169545), (1436, 13775130), (1467, 13484040), (1565, 12639672), (1630, 12135636), (1795, 11020104), (1878, 10533060), (1956, 10113030), (2154, 9183420), (2445, 8090424), (2504, 7899795), (2817, 7022040), (2872, 6887565), (2934, 6742020), (3130, 6319836), (3231, 6122280), (3260, 6067818), (3590, 5510052), (3756, 5266530), (3912, 5056515), (4308, 4591710), (4401, 4494680), (4695, 4213224), (4890, 4045212), (5385, 3673368), (5634, 3511020), (5868, 3371010), (6260, 3159918), (6462, 3061140), (6520, 3033909), (7180, 2755026), (7335, 2696808), (7512, 2633265), (8451, 2340680), (8616, 2295855), (8802, 2247340), (9390, 2106612), (9693, 2040760), (9780, 2022606), (10770, 1836684), (11268, 1755510), (11736, 1685505), (12520, 1579959), (12924, 1530570), (14085, 1404408), (14360, 1377513), (14670, 1348404), (16155, 1224456), (16902, 1170340), (17604, 1123670), (18780, 1053306), (19386, 1020380), (19560, 1011303), (21540, 918342), (22005, 898936), (22536, 877755), (25848, 765285), (28170, 702204), (29340, 674202), (32310, 612228), (33804, 585170), (35208, 561835), (37560, 526653), (38772, 510190), (42255, 468136), (43080, 459171), (44010, 449468), (48465, 408152), (51019, 387720), (56340, 351102), (58517, 338040), (58680, 337101), (64620, 306114), (67608, 292585), (77544, 255095), (84510, 234068), (88020, 224734), (96930, 204076), (102038, 193860), (112367, 176040), (112680, 175551), (117034, 169020), (129240, 153057)]