25646410

素因数分解:

$2^1\times 5^1\times {\mathrm{641}}^1\times {\mathrm{4001}}^1$

素因数の和:4649

約数の個数: 16

約数和(自身を含む): 46247112

約数和(自身を除く): 20600702

約数列:

[1, 2, 5, 10, 641, 1282, 3205, 4001, 6410, 8002, 20005, 40010, 2564641, 5129282, 12823205, 25646410]

約数ペア:

[(1, 25646410), (2, 12823205), (5, 5129282), (10, 2564641), (641, 40010), (1282, 20005), (3205, 8002), (4001, 6410)]