18993415

素因数分解:

$5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{1289}}^1$

素因数の和:1722

約数の個数: 16

約数和(自身を含む): 26130240

約数和(自身を除く): 7136825

約数列:

[1, 5, 7, 35, 421, 1289, 2105, 2947, 6445, 9023, 14735, 45115, 542669, 2713345, 3798683, 18993415]

約数ペア:

[(1, 18993415), (5, 3798683), (7, 2713345), (35, 542669), (421, 45115), (1289, 14735), (2105, 9023), (2947, 6445)]