21902715

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28631}}^1$

素因数の和:28659

約数の個数: 24

約数和(自身を含む): 40199328

約数和(自身を除く): 18296613

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28631, 85893, 143155, 257679, 429465, 486727, 1288395, 1460181, 2433635, 4380543, 7300905, 21902715]

約数ペア:

[(1, 21902715), (3, 7300905), (5, 4380543), (9, 2433635), (15, 1460181), (17, 1288395), (45, 486727), (51, 429465), (85, 257679), (153, 143155), (255, 85893), (765, 28631)]