18720335

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{2153}}^1$

素因数の和:2242

約数の個数: 16

約数和(自身を含む): 23573376

約数和(自身を除く): 4853041

約数列:

[1, 5, 37, 47, 185, 235, 1739, 2153, 8695, 10765, 79661, 101191, 398305, 505955, 3744067, 18720335]

約数ペア:

[(1, 18720335), (5, 3744067), (37, 505955), (47, 398305), (185, 101191), (235, 79661), (1739, 10765), (2153, 8695)]