21521870

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{227}}^1\times {\mathrm{499}}^1$

素因数の和:752

約数の個数: 32

約数和(自身を含む): 41040000

約数和(自身を除く): 19518130

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 227, 454, 499, 998, 1135, 2270, 2495, 4313, 4990, 8626, 9481, 18962, 21565, 43130, 47405, 94810, 113273, 226546, 566365, 1132730, 2152187, 4304374, 10760935, 21521870]

約数ペア:

[(1, 21521870), (2, 10760935), (5, 4304374), (10, 2152187), (19, 1132730), (38, 566365), (95, 226546), (190, 113273), (227, 94810), (454, 47405), (499, 43130), (998, 21565), (1135, 18962), (2270, 9481), (2495, 8626), (4313, 4990)]