213980

素因数分解:

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

素因数の和:845

約数の個数: 24

約数和(自身を含む): 484512

約数和(自身を除く): 270532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 823, 1646, 3292, 4115, 8230, 10699, 16460, 21398, 42796, 53495, 106990, 213980]

約数ペア:

[(1, 213980), (2, 106990), (4, 53495), (5, 42796), (10, 21398), (13, 16460), (20, 10699), (26, 8230), (52, 4115), (65, 3292), (130, 1646), (260, 823)]