20809765720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{12098701}}^1$

素因数の和:12098755

約数の個数: 32

約数和(自身を含む): 47910859920

約数和(自身を除く): 27101094200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 12098701, 24197402, 48394804, 60493505, 96789608, 120987010, 241974020, 483948040, 520244143, 1040488286, 2080976572, 2601220715, 4161953144, 5202441430, 10404882860, 20809765720]

約数ペア:

[(1, 20809765720), (2, 10404882860), (4, 5202441430), (5, 4161953144), (8, 2601220715), (10, 2080976572), (20, 1040488286), (40, 520244143), (43, 483948040), (86, 241974020), (172, 120987010), (215, 96789608), (344, 60493505), (430, 48394804), (860, 24197402), (1720, 12098701)]