21535515

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28151}}^1$

素因数の和:28179

約数の個数: 24

約数和(自身を含む): 39525408

約数和(自身を除く): 17989893

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28151, 84453, 140755, 253359, 422265, 478567, 1266795, 1435701, 2392835, 4307103, 7178505, 21535515]

約数ペア:

[(1, 21535515), (3, 7178505), (5, 4307103), (9, 2392835), (15, 1435701), (17, 1266795), (45, 478567), (51, 422265), (85, 253359), (153, 140755), (255, 84453), (765, 28151)]