21491365

素因数分解:

$5^1\times 7^1\times {\mathrm{677}}^1\times {\mathrm{907}}^1$

素因数の和:1596

約数の個数: 16

約数和(自身を含む): 29549952

約数和(自身を除く): 8058587

約数列:

[1, 5, 7, 35, 677, 907, 3385, 4535, 4739, 6349, 23695, 31745, 614039, 3070195, 4298273, 21491365]

約数ペア:

[(1, 21491365), (5, 4298273), (7, 3070195), (35, 614039), (677, 31745), (907, 23695), (3385, 6349), (4535, 4739)]