81172990

素因数分解:

$2^1\times 5^1\times {\mathrm{811}}^1\times {\mathrm{10009}}^1$

素因数の和:10827

約数の個数: 16

約数和(自身を含む): 146306160

約数和(自身を除く): 65133170

約数列:

[1, 2, 5, 10, 811, 1622, 4055, 8110, 10009, 20018, 50045, 100090, 8117299, 16234598, 40586495, 81172990]

約数ペア:

[(1, 81172990), (2, 40586495), (5, 16234598), (10, 8117299), (811, 100090), (1622, 50045), (4055, 20018), (8110, 10009)]