20041655

素因数分解:

$5^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:207

約数の個数: 24

約数和(自身を含む): 25690896

約数和(自身を除く): 5649241

約数列:

[1, 5, 31, 43, 97, 155, 215, 485, 961, 1333, 3007, 4171, 4805, 6665, 15035, 20855, 41323, 93217, 129301, 206615, 466085, 646505, 4008331, 20041655]

約数ペア:

[(1, 20041655), (5, 4008331), (31, 646505), (43, 466085), (97, 206615), (155, 129301), (215, 93217), (485, 41323), (961, 20855), (1333, 15035), (3007, 6665), (4171, 4805)]