20781994219

素因数分解:

$7^2\times {\mathrm{101}}^1\times {\mathrm{4199231}}^1$

素因数の和:4199346

約数の個数: 12

約数和(自身を含む): 24414334848

約数和(自身を除く): 3632340629

約数列:

[1, 7, 49, 101, 707, 4949, 4199231, 29394617, 205762319, 424122331, 2968856317, 20781994219]

約数ペア:

[(1, 20781994219), (7, 2968856317), (49, 424122331), (101, 205762319), (707, 29394617), (4949, 4199231)]