390053540

素因数分解:

$2^2\times 5^1\times {\mathrm{19502677}}^1$

素因数の和:19502686

約数の個数: 12

約数和(自身を含む): 819112476

約数和(自身を除く): 429058936

約数列:

[1, 2, 4, 5, 10, 20, 19502677, 39005354, 78010708, 97513385, 195026770, 390053540]

約数ペア:

[(1, 390053540), (2, 195026770), (4, 97513385), (5, 78010708), (10, 39005354), (20, 19502677)]