81596560

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{24877}}^1$

素因数の和:24931

約数の個数: 40

約数和(自身を含む): 194346936

約数和(自身を除く): 112750376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 24877, 49754, 99508, 124385, 199016, 248770, 398032, 497540, 995080, 1019957, 1990160, 2039914, 4079828, 5099785, 8159656, 10199570, 16319312, 20399140, 40798280, 81596560]

約数ペア:

[(1, 81596560), (2, 40798280), (4, 20399140), (5, 16319312), (8, 10199570), (10, 8159656), (16, 5099785), (20, 4079828), (40, 2039914), (41, 1990160), (80, 1019957), (82, 995080), (164, 497540), (205, 398032), (328, 248770), (410, 199016), (656, 124385), (820, 99508), (1640, 49754), (3280, 24877)]