81380432

素因数分解:

$2^4\times 7^1\times {\mathrm{726611}}^1$

素因数の和:726626

約数の個数: 20

約数和(自身を含む): 180199776

約数和(自身を除く): 98819344

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 726611, 1453222, 2906444, 5086277, 5812888, 10172554, 11625776, 20345108, 40690216, 81380432]

約数ペア:

[(1, 81380432), (2, 40690216), (4, 20345108), (7, 11625776), (8, 10172554), (14, 5812888), (16, 5086277), (28, 2906444), (56, 1453222), (112, 726611)]