21080176

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101347}}^1$

素因数の和:101368

約数の個数: 20

約数和(自身を含む): 43985032

約数和(自身を除く): 22904856

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101347, 202694, 405388, 810776, 1317511, 1621552, 2635022, 5270044, 10540088, 21080176]

約数ペア:

[(1, 21080176), (2, 10540088), (4, 5270044), (8, 2635022), (13, 1621552), (16, 1317511), (26, 810776), (52, 405388), (104, 202694), (208, 101347)]