21273428

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{4787}}^1$

素因数の和:4903

約数の個数: 24

約数和(自身を含む): 41023584

約数和(自身を除く): 19750156

約数列:

[1, 2, 4, 11, 22, 44, 101, 202, 404, 1111, 2222, 4444, 4787, 9574, 19148, 52657, 105314, 210628, 483487, 966974, 1933948, 5318357, 10636714, 21273428]

約数ペア:

[(1, 21273428), (2, 10636714), (4, 5318357), (11, 1933948), (22, 966974), (44, 483487), (101, 210628), (202, 105314), (404, 52657), (1111, 19148), (2222, 9574), (4444, 4787)]