21279585

素因数分解:

$3^1\times 5^1\times {\mathrm{751}}^1\times {\mathrm{1889}}^1$

素因数の和:2648

約数の個数: 16

約数和(自身を含む): 34110720

約数和(自身を除く): 12831135

約数列:

[1, 3, 5, 15, 751, 1889, 2253, 3755, 5667, 9445, 11265, 28335, 1418639, 4255917, 7093195, 21279585]

約数ペア:

[(1, 21279585), (3, 7093195), (5, 4255917), (15, 1418639), (751, 28335), (1889, 11265), (2253, 9445), (3755, 5667)]