21645841

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{449}}^1$

素因数の和:624

約数の個数: 16

約数和(自身を含む): 25401600

約数和(自身を除く): 3755759

約数列:

[1, 7, 71, 97, 449, 497, 679, 3143, 6887, 31879, 43553, 48209, 223153, 304871, 3092263, 21645841]

約数ペア:

[(1, 21645841), (7, 3092263), (71, 304871), (97, 223153), (449, 48209), (497, 43553), (679, 31879), (3143, 6887)]