28040020

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{6287}}^1$

素因数の和:6519

約数の個数: 24

約数和(自身を含む): 59157504

約数和(自身を除く): 31117484

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 6287, 12574, 25148, 31435, 62870, 125740, 1402001, 2804002, 5608004, 7010005, 14020010, 28040020]

約数ペア:

[(1, 28040020), (2, 14020010), (4, 7010005), (5, 5608004), (10, 2804002), (20, 1402001), (223, 125740), (446, 62870), (892, 31435), (1115, 25148), (2230, 12574), (4460, 6287)]