21590515

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{733}}^1$

素因数の和:918

約数の個数: 16

約数和(自身を含む): 26741088

約数和(自身を除く): 5150573

約数列:

[1, 5, 43, 137, 215, 685, 733, 3665, 5891, 29455, 31519, 100421, 157595, 502105, 4318103, 21590515]

約数ペア:

[(1, 21590515), (5, 4318103), (43, 502105), (137, 157595), (215, 100421), (685, 31519), (733, 29455), (3665, 5891)]