21443715

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28031}}^1$

素因数の和:28059

約数の個数: 24

約数和(自身を含む): 39356928

約数和(自身を除く): 17913213

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28031, 84093, 140155, 252279, 420465, 476527, 1261395, 1429581, 2382635, 4288743, 7147905, 21443715]

約数ペア:

[(1, 21443715), (3, 7147905), (5, 4288743), (9, 2382635), (15, 1429581), (17, 1261395), (45, 476527), (51, 420465), (85, 252279), (153, 140155), (255, 84093), (765, 28031)]