20551640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30223}}^1$

素因数の和:30251

約数の個数: 32

約数和(自身を含む): 48962880

約数和(自身を除く): 28411240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30223, 60446, 120892, 151115, 241784, 302230, 513791, 604460, 1027582, 1208920, 2055164, 2568955, 4110328, 5137910, 10275820, 20551640]

約数ペア:

[(1, 20551640), (2, 10275820), (4, 5137910), (5, 4110328), (8, 2568955), (10, 2055164), (17, 1208920), (20, 1027582), (34, 604460), (40, 513791), (68, 302230), (85, 241784), (136, 151115), (170, 120892), (340, 60446), (680, 30223)]