211329820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{812807}}^1$

素因数の和:812829

約数の個数: 24

約数和(自身を含む): 477931104

約数和(自身を除く): 266601284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 812807, 1625614, 3251228, 4064035, 8128070, 10566491, 16256140, 21132982, 42265964, 52832455, 105664910, 211329820]

約数ペア:

[(1, 211329820), (2, 105664910), (4, 52832455), (5, 42265964), (10, 21132982), (13, 16256140), (20, 10566491), (26, 8128070), (52, 4064035), (65, 3251228), (130, 1625614), (260, 812807)]