64291240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{123637}}^1$

素因数の和:123661

約数の個数: 32

約数和(自身を含む): 155783880

約数和(自身を除く): 91492640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 123637, 247274, 494548, 618185, 989096, 1236370, 1607281, 2472740, 3214562, 4945480, 6429124, 8036405, 12858248, 16072810, 32145620, 64291240]

約数ペア:

[(1, 64291240), (2, 32145620), (4, 16072810), (5, 12858248), (8, 8036405), (10, 6429124), (13, 4945480), (20, 3214562), (26, 2472740), (40, 1607281), (52, 1236370), (65, 989096), (104, 618185), (130, 494548), (260, 247274), (520, 123637)]