21569757

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13907}}^1$

素因数の和:13968

約数の個数: 16

約数和(自身を含む): 32044032

約数和(自身を除く): 10474275

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13907, 41721, 152977, 458931, 653629, 1960887, 7189919, 21569757]

約数ペア:

[(1, 21569757), (3, 7189919), (11, 1960887), (33, 653629), (47, 458931), (141, 152977), (517, 41721), (1551, 13907)]