21062895

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28657}}^1$

素因数の和:28679

約数の個数: 24

約数和(自身を含む): 39204144

約数和(自身を除く): 18141249

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28657, 85971, 143285, 200599, 429855, 601797, 1002995, 1404193, 3008985, 4212579, 7020965, 21062895]

約数ペア:

[(1, 21062895), (3, 7020965), (5, 4212579), (7, 3008985), (15, 1404193), (21, 1002995), (35, 601797), (49, 429855), (105, 200599), (147, 143285), (245, 85971), (735, 28657)]