20662860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{661}}^1$

素因数の和:1194

約数の個数: 48

約数和(自身を含む): 58054752

約数和(自身を除く): 37391892

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 521, 661, 1042, 1322, 1563, 1983, 2084, 2605, 2644, 3126, 3305, 3966, 5210, 6252, 6610, 7815, 7932, 9915, 10420, 13220, 15630, 19830, 31260, 39660, 344381, 688762, 1033143, 1377524, 1721905, 2066286, 3443810, 4132572, 5165715, 6887620, 10331430, 20662860]

約数ペア:

[(1, 20662860), (2, 10331430), (3, 6887620), (4, 5165715), (5, 4132572), (6, 3443810), (10, 2066286), (12, 1721905), (15, 1377524), (20, 1033143), (30, 688762), (60, 344381), (521, 39660), (661, 31260), (1042, 19830), (1322, 15630), (1563, 13220), (1983, 10420), (2084, 9915), (2605, 7932), (2644, 7815), (3126, 6610), (3305, 6252), (3966, 5210)]