21666256

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{13147}}^1$

素因数の和:13258

約数の個数: 20

約数和(自身を含む): 42389152

約数和(自身を除く): 20722896

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 13147, 26294, 52588, 105176, 210352, 1354141, 2708282, 5416564, 10833128, 21666256]

約数ペア:

[(1, 21666256), (2, 10833128), (4, 5416564), (8, 2708282), (16, 1354141), (103, 210352), (206, 105176), (412, 52588), (824, 26294), (1648, 13147)]