820402

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:521

約数の個数: 16

約数和(自身を含む): 1360800

約数和(自身を除く): 540398

約数列:

[1, 2, 11, 22, 89, 178, 419, 838, 979, 1958, 4609, 9218, 37291, 74582, 410201, 820402]

約数ペア:

[(1, 820402), (2, 410201), (11, 74582), (22, 37291), (89, 9218), (178, 4609), (419, 1958), (838, 979)]