80689640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49201}}^1$

素因数の和:49253

約数の個数: 32

約数和(自身を含む): 185983560

約数和(自身を除く): 105293920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 49201, 98402, 196804, 246005, 393608, 492010, 984020, 1968040, 2017241, 4034482, 8068964, 10086205, 16137928, 20172410, 40344820, 80689640]

約数ペア:

[(1, 80689640), (2, 40344820), (4, 20172410), (5, 16137928), (8, 10086205), (10, 8068964), (20, 4034482), (40, 2017241), (41, 1968040), (82, 984020), (164, 492010), (205, 393608), (328, 246005), (410, 196804), (820, 98402), (1640, 49201)]