81238680

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:183

約数の個数: 256

約数和(自身を含む): 295488000

約数和(自身を除く): 214249320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 37, 38, 40, 45, 54, 57, 60, 72, 74, 76, 90, 95, 107, 108, 111, 114, 120, 135, 148, 152, 171, 180, 185, 190, 214, 216, 222, 228, 270, 285, 296, 321, 333, 342, 360, 370, 380, 428, 444, 456, 513, 535, 540, 555, 570, 642, 666, 684, 703, 740, 760, 855, 856, 888, 963, 999, 1026, 1070, 1080, 1110, 1140, 1284, 1332, 1368, 1406, 1480, 1605, 1665, 1710, 1926, 1998, 2033, 2052, 2109, 2140, 2220, 2280, 2565, 2568, 2664, 2812, 2889, 3210, 3330, 3420, 3515, 3852, 3959, 3996, 4066, 4104, 4218, 4280, 4440, 4815, 4995, 5130, 5624, 5778, 6099, 6327, 6420, 6660, 6840, 7030, 7704, 7918, 7992, 8132, 8436, 9630, 9990, 10165, 10260, 10545, 11556, 11877, 12198, 12654, 12840, 13320, 14060, 14445, 15836, 16264, 16872, 18297, 18981, 19260, 19795, 19980, 20330, 20520, 21090, 23112, 23754, 24396, 25308, 28120, 28890, 30495, 31635, 31672, 35631, 36594, 37962, 38520, 39590, 39960, 40660, 42180, 47508, 48792, 50616, 54891, 57780, 59385, 60990, 63270, 71262, 73188, 75221, 75924, 79180, 81320, 84360, 91485, 94905, 95016, 106893, 109782, 115560, 118770, 121980, 126540, 142524, 146376, 150442, 151848, 158360, 178155, 182970, 189810, 213786, 219564, 225663, 237540, 243960, 253080, 274455, 285048, 300884, 356310, 365940, 376105, 379620, 427572, 439128, 451326, 475080, 534465, 548910, 601768, 676989, 712620, 731880, 752210, 759240, 855144, 902652, 1068930, 1097820, 1128315, 1353978, 1425240, 1504420, 1805304, 2030967, 2137860, 2195640, 2256630, 2707956, 3008840, 3384945, 4061934, 4275720, 4513260, 5415912, 6769890, 8123868, 9026520, 10154835, 13539780, 16247736, 20309670, 27079560, 40619340, 81238680]

約数ペア:

[(1, 81238680), (2, 40619340), (3, 27079560), (4, 20309670), (5, 16247736), (6, 13539780), (8, 10154835), (9, 9026520), (10, 8123868), (12, 6769890), (15, 5415912), (18, 4513260), (19, 4275720), (20, 4061934), (24, 3384945), (27, 3008840), (30, 2707956), (36, 2256630), (37, 2195640), (38, 2137860), (40, 2030967), (45, 1805304), (54, 1504420), (57, 1425240), (60, 1353978), (72, 1128315), (74, 1097820), (76, 1068930), (90, 902652), (95, 855144), (107, 759240), (108, 752210), (111, 731880), (114, 712620), (120, 676989), (135, 601768), (148, 548910), (152, 534465), (171, 475080), (180, 451326), (185, 439128), (190, 427572), (214, 379620), (216, 376105), (222, 365940), (228, 356310), (270, 300884), (285, 285048), (296, 274455), (321, 253080), (333, 243960), (342, 237540), (360, 225663), (370, 219564), (380, 213786), (428, 189810), (444, 182970), (456, 178155), (513, 158360), (535, 151848), (540, 150442), (555, 146376), (570, 142524), (642, 126540), (666, 121980), (684, 118770), (703, 115560), (740, 109782), (760, 106893), (855, 95016), (856, 94905), (888, 91485), (963, 84360), (999, 81320), (1026, 79180), (1070, 75924), (1080, 75221), (1110, 73188), (1140, 71262), (1284, 63270), (1332, 60990), (1368, 59385), (1406, 57780), (1480, 54891), (1605, 50616), (1665, 48792), (1710, 47508), (1926, 42180), (1998, 40660), (2033, 39960), (2052, 39590), (2109, 38520), (2140, 37962), (2220, 36594), (2280, 35631), (2565, 31672), (2568, 31635), (2664, 30495), (2812, 28890), (2889, 28120), (3210, 25308), (3330, 24396), (3420, 23754), (3515, 23112), (3852, 21090), (3959, 20520), (3996, 20330), (4066, 19980), (4104, 19795), (4218, 19260), (4280, 18981), (4440, 18297), (4815, 16872), (4995, 16264), (5130, 15836), (5624, 14445), (5778, 14060), (6099, 13320), (6327, 12840), (6420, 12654), (6660, 12198), (6840, 11877), (7030, 11556), (7704, 10545), (7918, 10260), (7992, 10165), (8132, 9990), (8436, 9630)]