81501580

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{55823}}^1$

素因数の和:55905

約数の個数: 24

約数和(自身を含む): 173500992

約数和(自身を除く): 91999412

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 55823, 111646, 223292, 279115, 558230, 1116460, 4075079, 8150158, 16300316, 20375395, 40750790, 81501580]

約数ペア:

[(1, 81501580), (2, 40750790), (4, 20375395), (5, 16300316), (10, 8150158), (20, 4075079), (73, 1116460), (146, 558230), (292, 279115), (365, 223292), (730, 111646), (1460, 55823)]