21156751

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{4657}}^1$

素因数の和:4734

約数の個数: 16

約数和(自身を含む): 26830080

約数和(自身を除く): 5673329

約数列:

[1, 7, 11, 59, 77, 413, 649, 4543, 4657, 32599, 51227, 274763, 358589, 1923341, 3022393, 21156751]

約数ペア:

[(1, 21156751), (7, 3022393), (11, 1923341), (59, 358589), (77, 274763), (413, 51227), (649, 32599), (4543, 4657)]