21801676

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{32251}}^1$

素因数の和:32281

約数の個数: 18

約数和(自身を含む): 41314812

約数和(自身を除く): 19513136

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 32251, 64502, 129004, 419263, 838526, 1677052, 5450419, 10900838, 21801676]

約数ペア:

[(1, 21801676), (2, 10900838), (4, 5450419), (13, 1677052), (26, 838526), (52, 419263), (169, 129004), (338, 64502), (676, 32251)]