28786815

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{10487}}^1$

素因数の和:10559

約数の個数: 24

約数和(自身を含む): 50719968

約数和(自身を除く): 21933153

約数列:

[1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745, 10487, 31461, 52435, 94383, 157305, 471915, 639707, 1919121, 3198535, 5757363, 9595605, 28786815]

約数ペア:

[(1, 28786815), (3, 9595605), (5, 5757363), (9, 3198535), (15, 1919121), (45, 639707), (61, 471915), (183, 157305), (305, 94383), (549, 52435), (915, 31461), (2745, 10487)]