21291188

素因数分解:

$2^2\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{1039}}^1$

素因数の和:1199

約数の個数: 24

約数和(自身を含む): 38438400

約数和(自身を除く): 17147212

約数列:

[1, 2, 4, 47, 94, 109, 188, 218, 436, 1039, 2078, 4156, 5123, 10246, 20492, 48833, 97666, 113251, 195332, 226502, 453004, 5322797, 10645594, 21291188]

約数ペア:

[(1, 21291188), (2, 10645594), (4, 5322797), (47, 453004), (94, 226502), (109, 195332), (188, 113251), (218, 97666), (436, 48833), (1039, 20492), (2078, 10246), (4156, 5123)]