201491428

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{139537}}^1$

素因数の和:139579

約数の個数: 18

約数和(自身を含む): 372147846

約数和(自身を除く): 170656418

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 139537, 279074, 558148, 2651203, 5302406, 10604812, 50372857, 100745714, 201491428]

約数ペア:

[(1, 201491428), (2, 100745714), (4, 50372857), (19, 10604812), (38, 5302406), (76, 2651203), (361, 558148), (722, 279074), (1444, 139537)]