81255398

素因数分解:

$2^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{65213}}^1$

素因数の和:65311

約数の個数: 16

約数和(自身を含む): 140862240

約数和(自身を除く): 59606842

約数列:

[1, 2, 7, 14, 89, 178, 623, 1246, 65213, 130426, 456491, 912982, 5803957, 11607914, 40627699, 81255398]

約数ペア:

[(1, 81255398), (2, 40627699), (7, 11607914), (14, 5803957), (89, 912982), (178, 456491), (623, 130426), (1246, 65213)]