21072801885

素因数分解:

$3^1\times 5^1\times {\mathrm{28409}}^1\times {\mathrm{49451}}^1$

素因数の和:77868

約数の個数: 16

約数和(自身を含む): 33718351680

約数和(自身を除く): 12645549795

約数列:

[1, 3, 5, 15, 28409, 49451, 85227, 142045, 148353, 247255, 426135, 741765, 1404853459, 4214560377, 7024267295, 21072801885]

約数ペア:

[(1, 21072801885), (3, 7024267295), (5, 4214560377), (15, 1404853459), (28409, 741765), (49451, 426135), (85227, 247255), (142045, 148353)]