81325880

素因数分解:

$2^3\times 5^1\times {\mathrm{797}}^1\times {\mathrm{2551}}^1$

素因数の和:3359

約数の個数: 32

約数和(自身を含む): 183284640

約数和(自身を除く): 101958760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 797, 1594, 2551, 3188, 3985, 5102, 6376, 7970, 10204, 12755, 15940, 20408, 25510, 31880, 51020, 102040, 2033147, 4066294, 8132588, 10165735, 16265176, 20331470, 40662940, 81325880]

約数ペア:

[(1, 81325880), (2, 40662940), (4, 20331470), (5, 16265176), (8, 10165735), (10, 8132588), (20, 4066294), (40, 2033147), (797, 102040), (1594, 51020), (2551, 31880), (3188, 25510), (3985, 20408), (5102, 15940), (6376, 12755), (7970, 10204)]