20565436420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{3229}}^1$

素因数の和:3485

約数の個数: 96

約数和(自身を含む): 45581760000

約数和(自身を除く): 25016323580

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 79, 116, 139, 145, 158, 278, 290, 316, 395, 556, 580, 695, 790, 1390, 1580, 2291, 2780, 3229, 4031, 4582, 6458, 8062, 9164, 10981, 11455, 12916, 16124, 16145, 20155, 21962, 22910, 32290, 40310, 43924, 45820, 54905, 64580, 80620, 93641, 109810, 187282, 219620, 255091, 318449, 374564, 448831, 468205, 510182, 636898, 897662, 936410, 1020364, 1273796, 1275455, 1592245, 1795324, 1872820, 2244155, 2550910, 3184490, 4488310, 5101820, 6368980, 7397639, 8976620, 13016099, 14795278, 26032198, 29590556, 35457649, 36988195, 52064396, 65080495, 70915298, 73976390, 130160990, 141830596, 147952780, 177288245, 260321980, 354576490, 709152980, 1028271821, 2056543642, 4113087284, 5141359105, 10282718210, 20565436420]

約数ペア:

[(1, 20565436420), (2, 10282718210), (4, 5141359105), (5, 4113087284), (10, 2056543642), (20, 1028271821), (29, 709152980), (58, 354576490), (79, 260321980), (116, 177288245), (139, 147952780), (145, 141830596), (158, 130160990), (278, 73976390), (290, 70915298), (316, 65080495), (395, 52064396), (556, 36988195), (580, 35457649), (695, 29590556), (790, 26032198), (1390, 14795278), (1580, 13016099), (2291, 8976620), (2780, 7397639), (3229, 6368980), (4031, 5101820), (4582, 4488310), (6458, 3184490), (8062, 2550910), (9164, 2244155), (10981, 1872820), (11455, 1795324), (12916, 1592245), (16124, 1275455), (16145, 1273796), (20155, 1020364), (21962, 936410), (22910, 897662), (32290, 636898), (40310, 510182), (43924, 468205), (45820, 448831), (54905, 374564), (64580, 318449), (80620, 255091), (93641, 219620), (109810, 187282)]