20455515

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11087}}^1$

素因数の和:11139

約数の個数: 24

約数和(自身を含む): 36324288

約数和(自身を除く): 15868773

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 369, 615, 1845, 11087, 33261, 55435, 99783, 166305, 454567, 498915, 1363701, 2272835, 4091103, 6818505, 20455515]

約数ペア:

[(1, 20455515), (3, 6818505), (5, 4091103), (9, 2272835), (15, 1363701), (41, 498915), (45, 454567), (123, 166305), (205, 99783), (369, 55435), (615, 33261), (1845, 11087)]