20980804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{13913}}^1$

素因数の和:13959

約数の個数: 24

約数和(自身を含む): 40907160

約数和(自身を除く): 19926356

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 116, 377, 754, 1508, 13913, 27826, 55652, 180869, 361738, 403477, 723476, 806954, 1613908, 5245201, 10490402, 20980804]

約数ペア:

[(1, 20980804), (2, 10490402), (4, 5245201), (13, 1613908), (26, 806954), (29, 723476), (52, 403477), (58, 361738), (116, 180869), (377, 55652), (754, 27826), (1508, 13913)]