12787940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1571}}^1$

素因数の和:1628

約数の個数: 48

約数和(自身を含む): 30106944

約数和(自身を除く): 17319004

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1571, 1628, 2035, 3142, 4070, 6284, 7855, 8140, 15710, 17281, 31420, 34562, 58127, 69124, 86405, 116254, 172810, 232508, 290635, 345620, 581270, 639397, 1162540, 1278794, 2557588, 3196985, 6393970, 12787940]

約数ペア:

[(1, 12787940), (2, 6393970), (4, 3196985), (5, 2557588), (10, 1278794), (11, 1162540), (20, 639397), (22, 581270), (37, 345620), (44, 290635), (55, 232508), (74, 172810), (110, 116254), (148, 86405), (185, 69124), (220, 58127), (370, 34562), (407, 31420), (740, 17281), (814, 15710), (1571, 8140), (1628, 7855), (2035, 6284), (3142, 4070)]