21431445

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{509}}^1$

素因数の和:925

約数の個数: 32

約数和(自身を含む): 39363840

約数和(自身を除く): 17932395

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 401, 509, 1203, 1527, 2005, 2545, 2807, 3563, 6015, 7635, 8421, 10689, 14035, 17815, 42105, 53445, 204109, 612327, 1020545, 1428763, 3061635, 4286289, 7143815, 21431445]

約数ペア:

[(1, 21431445), (3, 7143815), (5, 4286289), (7, 3061635), (15, 1428763), (21, 1020545), (35, 612327), (105, 204109), (401, 53445), (509, 42105), (1203, 17815), (1527, 14035), (2005, 10689), (2545, 8421), (2807, 7635), (3563, 6015)]