21148953

素因数分解:

$3^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{1933}}^1$

素因数の和:2464

約数の個数: 16

約数和(自身を含む): 32305536

約数和(自身を除く): 11156583

約数列:

[1, 3, 7, 21, 521, 1563, 1933, 3647, 5799, 10941, 13531, 40593, 1007093, 3021279, 7049651, 21148953]

約数ペア:

[(1, 21148953), (3, 7049651), (7, 3021279), (21, 1007093), (521, 40593), (1563, 13531), (1933, 10941), (3647, 5799)]