81398090

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{428411}}^1$

素因数の和:428437

約数の個数: 16

約数和(自身を含む): 154228320

約数和(自身を除く): 72830230

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 428411, 856822, 2142055, 4284110, 8139809, 16279618, 40699045, 81398090]

約数ペア:

[(1, 81398090), (2, 40699045), (5, 16279618), (10, 8139809), (19, 4284110), (38, 2142055), (95, 856822), (190, 428411)]