21491866

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{31513}}^1$

素因数の和:31557

約数の個数: 16

約数和(自身を含む): 36304128

約数和(自身を除く): 14812262

約数列:

[1, 2, 11, 22, 31, 62, 341, 682, 31513, 63026, 346643, 693286, 976903, 1953806, 10745933, 21491866]

約数ペア:

[(1, 21491866), (2, 10745933), (11, 1953806), (22, 976903), (31, 693286), (62, 346643), (341, 63026), (682, 31513)]