21001545

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9151}}^1$

素因数の和:9182

約数の個数: 32

約数和(自身を含む): 39536640

約数和(自身を除く): 18535095

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 9151, 27453, 45755, 82359, 137265, 155567, 247077, 411795, 466701, 777835, 1235385, 1400103, 2333505, 4200309, 7000515, 21001545]

約数ペア:

[(1, 21001545), (3, 7000515), (5, 4200309), (9, 2333505), (15, 1400103), (17, 1235385), (27, 777835), (45, 466701), (51, 411795), (85, 247077), (135, 155567), (153, 137265), (255, 82359), (459, 45755), (765, 27453), (2295, 9151)]