213431660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{820891}}^1$

素因数の和:820913

約数の個数: 24

約数和(自身を含む): 482684496

約数和(自身を除く): 269252836

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 820891, 1641782, 3283564, 4104455, 8208910, 10671583, 16417820, 21343166, 42686332, 53357915, 106715830, 213431660]

約数ペア:

[(1, 213431660), (2, 106715830), (4, 53357915), (5, 42686332), (10, 21343166), (13, 16417820), (20, 10671583), (26, 8208910), (52, 4104455), (65, 3283564), (130, 1641782), (260, 820891)]