208149991

素因数分解:

$7^2\times {\mathrm{101}}^1\times {\mathrm{137}}^1\times {\mathrm{307}}^1$

素因数の和:559

約数の個数: 24

約数和(自身を含む): 247118256

約数和(自身を除く): 38968265

約数列:

[1, 7, 49, 101, 137, 307, 707, 959, 2149, 4949, 6713, 13837, 15043, 31007, 42059, 96859, 217049, 294413, 678013, 1519343, 2060891, 4247959, 29735713, 208149991]

約数ペア:

[(1, 208149991), (7, 29735713), (49, 4247959), (101, 2060891), (137, 1519343), (307, 678013), (707, 294413), (959, 217049), (2149, 96859), (4949, 42059), (6713, 31007), (13837, 15043)]