20913915

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{126751}}^1$

素因数の和:126770

約数の個数: 16

約数和(自身を含む): 36504576

約数和(自身を除く): 15590661

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 126751, 380253, 633755, 1394261, 1901265, 4182783, 6971305, 20913915]

約数ペア:

[(1, 20913915), (3, 6971305), (5, 4182783), (11, 1901265), (15, 1394261), (33, 633755), (55, 380253), (165, 126751)]