409506700

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{421}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 909879264

約数和(自身を除く): 500372564

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 137, 142, 274, 284, 355, 421, 548, 685, 710, 842, 1370, 1420, 1684, 1775, 2105, 2740, 3425, 3550, 4210, 6850, 7100, 8420, 9727, 10525, 13700, 19454, 21050, 29891, 38908, 42100, 48635, 57677, 59782, 97270, 115354, 119564, 149455, 194540, 230708, 243175, 288385, 298910, 486350, 576770, 597820, 747275, 972700, 1153540, 1441925, 1494550, 2883850, 2989100, 4095067, 5767700, 8190134, 16380268, 20475335, 40950670, 81901340, 102376675, 204753350, 409506700]

約数ペア:

[(1, 409506700), (2, 204753350), (4, 102376675), (5, 81901340), (10, 40950670), (20, 20475335), (25, 16380268), (50, 8190134), (71, 5767700), (100, 4095067), (137, 2989100), (142, 2883850), (274, 1494550), (284, 1441925), (355, 1153540), (421, 972700), (548, 747275), (685, 597820), (710, 576770), (842, 486350), (1370, 298910), (1420, 288385), (1684, 243175), (1775, 230708), (2105, 194540), (2740, 149455), (3425, 119564), (3550, 115354), (4210, 97270), (6850, 59782), (7100, 57677), (8420, 48635), (9727, 42100), (10525, 38908), (13700, 29891), (19454, 21050)]