21577816

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{207479}}^1$

素因数の和:207498

約数の個数: 16

約数和(自身を含む): 43570800

約数和(自身を除く): 21992984

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 207479, 414958, 829916, 1659832, 2697227, 5394454, 10788908, 21577816]

約数ペア:

[(1, 21577816), (2, 10788908), (4, 5394454), (8, 2697227), (13, 1659832), (26, 829916), (52, 414958), (104, 207479)]