21031007180

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{9647251}}^1$

素因数の和:9647369

約数の個数: 24

約数和(自身を含む): 44570304240

約数和(自身を除く): 23539297060

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 9647251, 19294502, 38589004, 48236255, 96472510, 192945020, 1051550359, 2103100718, 4206201436, 5257751795, 10515503590, 21031007180]

約数ペア:

[(1, 21031007180), (2, 10515503590), (4, 5257751795), (5, 4206201436), (10, 2103100718), (20, 1051550359), (109, 192945020), (218, 96472510), (436, 48236255), (545, 38589004), (1090, 19294502), (2180, 9647251)]