1390870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{823}}^1$

素因数の和:856

約数の個数: 24

約数和(自身を含む): 2714256

約数和(自身を除く): 1323386

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 823, 845, 1646, 1690, 4115, 8230, 10699, 21398, 53495, 106990, 139087, 278174, 695435, 1390870]

約数ペア:

[(1, 1390870), (2, 695435), (5, 278174), (10, 139087), (13, 106990), (26, 53495), (65, 21398), (130, 10699), (169, 8230), (338, 4115), (823, 1690), (845, 1646)]