208857385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{122497}}^1$

素因数の和:122544

約数の個数: 16

約数和(自身を含む): 282235392

約数和(自身を除く): 73378007

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 122497, 612485, 1347467, 3797407, 6737335, 18987035, 41771477, 208857385]

約数ペア:

[(1, 208857385), (5, 41771477), (11, 18987035), (31, 6737335), (55, 3797407), (155, 1347467), (341, 612485), (1705, 122497)]