21163532

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31307}}^1$

素因数の和:31337

約数の個数: 18

約数和(自身を含む): 40105548

約数和(自身を除く): 18942016

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 31307, 62614, 125228, 406991, 813982, 1627964, 5290883, 10581766, 21163532]

約数ペア:

[(1, 21163532), (2, 10581766), (4, 5290883), (13, 1627964), (26, 813982), (52, 406991), (169, 125228), (338, 62614), (676, 31307)]