20977605

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42379}}^1$

素因数の和:42401

約数の個数: 24

約数和(自身を含む): 39667680

約数和(自身を除く): 18690075

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42379, 127137, 211895, 381411, 466169, 635685, 1398507, 1907055, 2330845, 4195521, 6992535, 20977605]

約数ペア:

[(1, 20977605), (3, 6992535), (5, 4195521), (9, 2330845), (11, 1907055), (15, 1398507), (33, 635685), (45, 466169), (55, 381411), (99, 211895), (165, 127137), (495, 42379)]