21764765

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{307}}^1\times {\mathrm{1289}}^1$

素因数の和:1612

約数の個数: 16

約数和(自身を含む): 28607040

約数和(自身を除く): 6842275

約数列:

[1, 5, 11, 55, 307, 1289, 1535, 3377, 6445, 14179, 16885, 70895, 395723, 1978615, 4352953, 21764765]

約数ペア:

[(1, 21764765), (5, 4352953), (11, 1978615), (55, 395723), (307, 70895), (1289, 16885), (1535, 14179), (3377, 6445)]