20415441220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{369979}}^1$

素因数の和:370108

約数の個数: 48

約数和(自身を含む): 44752780800

約数和(自身を除く): 24337339580

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 890, 1780, 2759, 5518, 11036, 13795, 27590, 55180, 369979, 739958, 1479916, 1849895, 3699790, 7399580, 11469349, 22938698, 32928131, 45877396, 57346745, 65856262, 114693490, 131712524, 164640655, 229386980, 329281310, 658562620, 1020772061, 2041544122, 4083088244, 5103860305, 10207720610, 20415441220]

約数ペア:

[(1, 20415441220), (2, 10207720610), (4, 5103860305), (5, 4083088244), (10, 2041544122), (20, 1020772061), (31, 658562620), (62, 329281310), (89, 229386980), (124, 164640655), (155, 131712524), (178, 114693490), (310, 65856262), (356, 57346745), (445, 45877396), (620, 32928131), (890, 22938698), (1780, 11469349), (2759, 7399580), (5518, 3699790), (11036, 1849895), (13795, 1479916), (27590, 739958), (55180, 369979)]