18965520

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:150

約数の個数: 240

約数和(自身を含む): 75209472

約数和(自身を除く): 56243952

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 53, 56, 60, 63, 70, 71, 72, 80, 84, 90, 105, 106, 112, 120, 126, 140, 142, 144, 159, 168, 180, 210, 212, 213, 240, 252, 265, 280, 284, 315, 318, 336, 355, 360, 371, 420, 424, 426, 477, 497, 504, 530, 560, 568, 630, 636, 639, 710, 720, 742, 795, 840, 848, 852, 954, 994, 1008, 1060, 1065, 1113, 1136, 1260, 1272, 1278, 1420, 1484, 1491, 1590, 1680, 1704, 1855, 1908, 1988, 2120, 2130, 2226, 2385, 2485, 2520, 2544, 2556, 2840, 2968, 2982, 3180, 3195, 3339, 3408, 3710, 3763, 3816, 3976, 4240, 4260, 4452, 4473, 4770, 4970, 5040, 5112, 5565, 5680, 5936, 5964, 6360, 6390, 6678, 7420, 7455, 7526, 7632, 7952, 8520, 8904, 8946, 9540, 9940, 10224, 11130, 11289, 11928, 12720, 12780, 13356, 14840, 14910, 15052, 16695, 17040, 17808, 17892, 18815, 19080, 19880, 22260, 22365, 22578, 23856, 25560, 26341, 26712, 29680, 29820, 30104, 33390, 33867, 35784, 37630, 38160, 39760, 44520, 44730, 45156, 51120, 52682, 53424, 56445, 59640, 60208, 66780, 67734, 71568, 75260, 79023, 89040, 89460, 90312, 105364, 112890, 119280, 131705, 133560, 135468, 150520, 158046, 169335, 178920, 180624, 210728, 225780, 237069, 263410, 267120, 270936, 301040, 316092, 338670, 357840, 395115, 421456, 451560, 474138, 526820, 541872, 632184, 677340, 790230, 903120, 948276, 1053640, 1185345, 1264368, 1354680, 1580460, 1896552, 2107280, 2370690, 2709360, 3160920, 3793104, 4741380, 6321840, 9482760, 18965520]

約数ペア:

[(1, 18965520), (2, 9482760), (3, 6321840), (4, 4741380), (5, 3793104), (6, 3160920), (7, 2709360), (8, 2370690), (9, 2107280), (10, 1896552), (12, 1580460), (14, 1354680), (15, 1264368), (16, 1185345), (18, 1053640), (20, 948276), (21, 903120), (24, 790230), (28, 677340), (30, 632184), (35, 541872), (36, 526820), (40, 474138), (42, 451560), (45, 421456), (48, 395115), (53, 357840), (56, 338670), (60, 316092), (63, 301040), (70, 270936), (71, 267120), (72, 263410), (80, 237069), (84, 225780), (90, 210728), (105, 180624), (106, 178920), (112, 169335), (120, 158046), (126, 150520), (140, 135468), (142, 133560), (144, 131705), (159, 119280), (168, 112890), (180, 105364), (210, 90312), (212, 89460), (213, 89040), (240, 79023), (252, 75260), (265, 71568), (280, 67734), (284, 66780), (315, 60208), (318, 59640), (336, 56445), (355, 53424), (360, 52682), (371, 51120), (420, 45156), (424, 44730), (426, 44520), (477, 39760), (497, 38160), (504, 37630), (530, 35784), (560, 33867), (568, 33390), (630, 30104), (636, 29820), (639, 29680), (710, 26712), (720, 26341), (742, 25560), (795, 23856), (840, 22578), (848, 22365), (852, 22260), (954, 19880), (994, 19080), (1008, 18815), (1060, 17892), (1065, 17808), (1113, 17040), (1136, 16695), (1260, 15052), (1272, 14910), (1278, 14840), (1420, 13356), (1484, 12780), (1491, 12720), (1590, 11928), (1680, 11289), (1704, 11130), (1855, 10224), (1908, 9940), (1988, 9540), (2120, 8946), (2130, 8904), (2226, 8520), (2385, 7952), (2485, 7632), (2520, 7526), (2544, 7455), (2556, 7420), (2840, 6678), (2968, 6390), (2982, 6360), (3180, 5964), (3195, 5936), (3339, 5680), (3408, 5565), (3710, 5112), (3763, 5040), (3816, 4970), (3976, 4770), (4240, 4473), (4260, 4452)]