80921290

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{197369}}^1$

素因数の和:197417

約数の個数: 16

約数和(自身を含む): 149211720

約数和(自身を除く): 68290430

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 197369, 394738, 986845, 1973690, 8092129, 16184258, 40460645, 80921290]

約数ペア:

[(1, 80921290), (2, 40460645), (5, 16184258), (10, 8092129), (41, 1973690), (82, 986845), (205, 394738), (410, 197369)]