21385847

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{6197}}^1$

素因数の和:6250

約数の個数: 16

約数和(自身を含む): 26775360

約数和(自身を除く): 5389513

約数列:

[1, 7, 17, 29, 119, 203, 493, 3451, 6197, 43379, 105349, 179713, 737443, 1257991, 3055121, 21385847]

約数ペア:

[(1, 21385847), (7, 3055121), (17, 1257991), (29, 737443), (119, 179713), (203, 105349), (493, 43379), (3451, 6197)]