21073995

素因数分解:

$3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2707}}^1$

素因数の和:2891

約数の個数: 24

約数和(自身を含む): 36752976

約数和(自身を除く): 15678981

約数列:

[1, 3, 5, 9, 15, 45, 173, 519, 865, 1557, 2595, 2707, 7785, 8121, 13535, 24363, 40605, 121815, 468311, 1404933, 2341555, 4214799, 7024665, 21073995]

約数ペア:

[(1, 21073995), (3, 7024665), (5, 4214799), (9, 2341555), (15, 1404933), (45, 468311), (173, 121815), (519, 40605), (865, 24363), (1557, 13535), (2595, 8121), (2707, 7785)]