21728635

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{2531}}^1$

素因数の和:2654

約数の個数: 16

約数和(自身を含む): 27892512

約数和(自身を除く): 6163877

約数列:

[1, 5, 17, 85, 101, 505, 1717, 2531, 8585, 12655, 43027, 215135, 255631, 1278155, 4345727, 21728635]

約数ペア:

[(1, 21728635), (5, 4345727), (17, 1278155), (85, 255631), (101, 215135), (505, 43027), (1717, 12655), (2531, 8585)]