20662180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13417}}^1$

素因数の和:13444

約数の個数: 48

約数和(自身を含む): 54101376

約数和(自身を除く): 33439196

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13417, 26834, 53668, 67085, 93919, 134170, 147587, 187838, 268340, 295174, 375676, 469595, 590348, 737935, 939190, 1033109, 1475870, 1878380, 2066218, 2951740, 4132436, 5165545, 10331090, 20662180]

約数ペア:

[(1, 20662180), (2, 10331090), (4, 5165545), (5, 4132436), (7, 2951740), (10, 2066218), (11, 1878380), (14, 1475870), (20, 1033109), (22, 939190), (28, 737935), (35, 590348), (44, 469595), (55, 375676), (70, 295174), (77, 268340), (110, 187838), (140, 147587), (154, 134170), (220, 93919), (308, 67085), (385, 53668), (770, 26834), (1540, 13417)]