20985645

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{34123}}^1$

素因数の和:34172

約数の個数: 16

約数和(自身を含む): 34396992

約数和(自身を除く): 13411347

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 34123, 102369, 170615, 511845, 1399043, 4197129, 6995215, 20985645]

約数ペア:

[(1, 20985645), (3, 6995215), (5, 4197129), (15, 1399043), (41, 511845), (123, 170615), (205, 102369), (615, 34123)]