21013255

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{313}}^1\times {\mathrm{463}}^1$

素因数の和:810

約数の個数: 16

約数和(自身を含む): 26225280

約数和(自身を除く): 5212025

約数列:

[1, 5, 29, 145, 313, 463, 1565, 2315, 9077, 13427, 45385, 67135, 144919, 724595, 4202651, 21013255]

約数ペア:

[(1, 21013255), (5, 4202651), (29, 724595), (145, 144919), (313, 67135), (463, 45385), (1565, 13427), (2315, 9077)]