81221578

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1\times {\mathrm{2521}}^1$

素因数の和:2793

約数の個数: 16

約数和(自身を含む): 123931080

約数和(自身を除く): 42709502

約数列:

[1, 2, 89, 178, 181, 362, 2521, 5042, 16109, 32218, 224369, 448738, 456301, 912602, 40610789, 81221578]

約数ペア:

[(1, 81221578), (2, 40610789), (89, 912602), (178, 456301), (181, 448738), (362, 224369), (2521, 32218), (5042, 16109)]