81901805

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^2\times {\mathrm{89}}^1$

素因数の和:269

約数の個数: 24

約数和(自身を含む): 103352760

約数和(自身を除く): 21450955

約数列:

[1, 5, 41, 67, 89, 205, 335, 445, 2747, 3649, 4489, 5963, 13735, 18245, 22445, 29815, 184049, 244483, 399521, 920245, 1222415, 1997605, 16380361, 81901805]

約数ペア:

[(1, 81901805), (5, 16380361), (41, 1997605), (67, 1222415), (89, 920245), (205, 399521), (335, 244483), (445, 184049), (2747, 29815), (3649, 22445), (4489, 18245), (5963, 13735)]