81380140

素因数分解:

$2^2\times 5^1\times {\mathrm{599}}^1\times {\mathrm{6793}}^1$

素因数の和:7401

約数の個数: 24

約数和(自身を含む): 171208800

約数和(自身を除く): 89828660

約数列:

[1, 2, 4, 5, 10, 20, 599, 1198, 2396, 2995, 5990, 6793, 11980, 13586, 27172, 33965, 67930, 135860, 4069007, 8138014, 16276028, 20345035, 40690070, 81380140]

約数ペア:

[(1, 81380140), (2, 40690070), (4, 20345035), (5, 16276028), (10, 8138014), (20, 4069007), (599, 135860), (1198, 67930), (2396, 33965), (2995, 27172), (5990, 13586), (6793, 11980)]