21026655

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{11981}}^1$

素因数の和:12008

約数の個数: 32

約数和(自身を含む): 40259520

約数和(自身を除く): 19232865

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 11981, 35943, 59905, 107829, 155753, 179715, 323487, 467259, 539145, 778765, 1401777, 1617435, 2336295, 4205331, 7008885, 21026655]

約数ペア:

[(1, 21026655), (3, 7008885), (5, 4205331), (9, 2336295), (13, 1617435), (15, 1401777), (27, 778765), (39, 539145), (45, 467259), (65, 323487), (117, 179715), (135, 155753), (195, 107829), (351, 59905), (585, 35943), (1755, 11981)]