21152464

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9511}}^1$

素因数の和:9658

約数の個数: 20

約数和(自身を含む): 41282080

約数和(自身を除く): 20129616

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9511, 19022, 38044, 76088, 152176, 1322029, 2644058, 5288116, 10576232, 21152464]

約数ペア:

[(1, 21152464), (2, 10576232), (4, 5288116), (8, 2644058), (16, 1322029), (139, 152176), (278, 76088), (556, 38044), (1112, 19022), (2224, 9511)]