25092220

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{179}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 54552960

約数和(自身を除く): 29460740

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 163, 172, 179, 215, 326, 358, 430, 652, 716, 815, 860, 895, 1630, 1790, 3260, 3580, 7009, 7697, 14018, 15394, 28036, 29177, 30788, 35045, 38485, 58354, 70090, 76970, 116708, 140180, 145885, 153940, 291770, 583540, 1254611, 2509222, 5018444, 6273055, 12546110, 25092220]

約数ペア:

[(1, 25092220), (2, 12546110), (4, 6273055), (5, 5018444), (10, 2509222), (20, 1254611), (43, 583540), (86, 291770), (163, 153940), (172, 145885), (179, 140180), (215, 116708), (326, 76970), (358, 70090), (430, 58354), (652, 38485), (716, 35045), (815, 30788), (860, 29177), (895, 28036), (1630, 15394), (1790, 14018), (3260, 7697), (3580, 7009)]