21175856

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101807}}^1$

素因数の和:101828

約数の個数: 20

約数和(自身を含む): 44184672

約数和(自身を除く): 23008816

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101807, 203614, 407228, 814456, 1323491, 1628912, 2646982, 5293964, 10587928, 21175856]

約数ペア:

[(1, 21175856), (2, 10587928), (4, 5293964), (8, 2646982), (13, 1628912), (16, 1323491), (26, 814456), (52, 407228), (104, 203614), (208, 101807)]