20589940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2411}}^1$

素因数の和:2488

約数の個数: 48

約数和(自身を含む): 50246784

約数和(自身を除く): 29656844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 2411, 4270, 4822, 8540, 9644, 12055, 16877, 24110, 33754, 48220, 67508, 84385, 147071, 168770, 294142, 337540, 588284, 735355, 1029497, 1470710, 2058994, 2941420, 4117988, 5147485, 10294970, 20589940]

約数ペア:

[(1, 20589940), (2, 10294970), (4, 5147485), (5, 4117988), (7, 2941420), (10, 2058994), (14, 1470710), (20, 1029497), (28, 735355), (35, 588284), (61, 337540), (70, 294142), (122, 168770), (140, 147071), (244, 84385), (305, 67508), (427, 48220), (610, 33754), (854, 24110), (1220, 16877), (1708, 12055), (2135, 9644), (2411, 8540), (4270, 4822)]