20981322960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{397}}^1\times {\mathrm{1303}}^1$

素因数の和:1742

約数の個数: 240

約数和(自身を含む): 70661798784

約数和(自身を除く): 49680475824

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 169, 195, 208, 240, 260, 312, 338, 390, 397, 507, 520, 624, 676, 780, 794, 845, 1014, 1040, 1191, 1303, 1352, 1560, 1588, 1690, 1985, 2028, 2382, 2535, 2606, 2704, 3120, 3176, 3380, 3909, 3970, 4056, 4764, 5070, 5161, 5212, 5955, 6352, 6515, 6760, 7818, 7940, 8112, 9528, 10140, 10322, 10424, 11910, 13030, 13520, 15483, 15636, 15880, 16939, 19056, 19545, 20280, 20644, 20848, 23820, 25805, 26060, 30966, 31272, 31760, 33878, 39090, 40560, 41288, 47640, 50817, 51610, 52120, 61932, 62544, 67093, 67756, 77415, 78180, 82576, 84695, 95280, 101634, 103220, 104240, 123864, 134186, 135512, 154830, 156360, 169390, 201279, 203268, 206440, 220207, 247728, 254085, 268372, 271024, 309660, 312720, 335465, 338780, 402558, 406536, 412880, 440414, 508170, 517291, 536744, 619320, 660621, 670930, 677560, 805116, 813072, 880828, 1006395, 1016340, 1034582, 1073488, 1101035, 1238640, 1321242, 1341860, 1355120, 1551873, 1610232, 1761656, 2012790, 2032680, 2069164, 2202070, 2586455, 2642484, 2683720, 3103746, 3220464, 3303105, 3523312, 4025580, 4065360, 4138328, 4404140, 5172910, 5284968, 5367440, 6207492, 6606210, 6724783, 7759365, 8051160, 8276656, 8808280, 10345820, 10569936, 12414984, 13212420, 13449566, 15518730, 16102320, 17616560, 20174349, 20691640, 24829968, 26424840, 26899132, 31037460, 33623915, 40348698, 41383280, 52849680, 53798264, 62074920, 67247830, 80697396, 87422179, 100871745, 107596528, 124149840, 134495660, 161394792, 174844358, 201743490, 262266537, 268991320, 322789584, 349688716, 403486980, 437110895, 524533074, 537982640, 699377432, 806973960, 874221790, 1049066148, 1311332685, 1398754864, 1613947920, 1748443580, 2098132296, 2622665370, 3496887160, 4196264592, 5245330740, 6993774320, 10490661480, 20981322960]

約数ペア:

[(1, 20981322960), (2, 10490661480), (3, 6993774320), (4, 5245330740), (5, 4196264592), (6, 3496887160), (8, 2622665370), (10, 2098132296), (12, 1748443580), (13, 1613947920), (15, 1398754864), (16, 1311332685), (20, 1049066148), (24, 874221790), (26, 806973960), (30, 699377432), (39, 537982640), (40, 524533074), (48, 437110895), (52, 403486980), (60, 349688716), (65, 322789584), (78, 268991320), (80, 262266537), (104, 201743490), (120, 174844358), (130, 161394792), (156, 134495660), (169, 124149840), (195, 107596528), (208, 100871745), (240, 87422179), (260, 80697396), (312, 67247830), (338, 62074920), (390, 53798264), (397, 52849680), (507, 41383280), (520, 40348698), (624, 33623915), (676, 31037460), (780, 26899132), (794, 26424840), (845, 24829968), (1014, 20691640), (1040, 20174349), (1191, 17616560), (1303, 16102320), (1352, 15518730), (1560, 13449566), (1588, 13212420), (1690, 12414984), (1985, 10569936), (2028, 10345820), (2382, 8808280), (2535, 8276656), (2606, 8051160), (2704, 7759365), (3120, 6724783), (3176, 6606210), (3380, 6207492), (3909, 5367440), (3970, 5284968), (4056, 5172910), (4764, 4404140), (5070, 4138328), (5161, 4065360), (5212, 4025580), (5955, 3523312), (6352, 3303105), (6515, 3220464), (6760, 3103746), (7818, 2683720), (7940, 2642484), (8112, 2586455), (9528, 2202070), (10140, 2069164), (10322, 2032680), (10424, 2012790), (11910, 1761656), (13030, 1610232), (13520, 1551873), (15483, 1355120), (15636, 1341860), (15880, 1321242), (16939, 1238640), (19056, 1101035), (19545, 1073488), (20280, 1034582), (20644, 1016340), (20848, 1006395), (23820, 880828), (25805, 813072), (26060, 805116), (30966, 677560), (31272, 670930), (31760, 660621), (33878, 619320), (39090, 536744), (40560, 517291), (41288, 508170), (47640, 440414), (50817, 412880), (51610, 406536), (52120, 402558), (61932, 338780), (62544, 335465), (67093, 312720), (67756, 309660), (77415, 271024), (78180, 268372), (82576, 254085), (84695, 247728), (95280, 220207), (101634, 206440), (103220, 203268), (104240, 201279), (123864, 169390), (134186, 156360), (135512, 154830)]