13215220

素因数分解:

$2^2\times 5^1\times {\mathrm{719}}^1\times {\mathrm{919}}^1$

素因数の和:1647

約数の個数: 24

約数和(自身を含む): 27820800

約数和(自身を除く): 14605580

約数列:

[1, 2, 4, 5, 10, 20, 719, 919, 1438, 1838, 2876, 3595, 3676, 4595, 7190, 9190, 14380, 18380, 660761, 1321522, 2643044, 3303805, 6607610, 13215220]

約数ペア:

[(1, 13215220), (2, 6607610), (4, 3303805), (5, 2643044), (10, 1321522), (20, 660761), (719, 18380), (919, 14380), (1438, 9190), (1838, 7190), (2876, 4595), (3595, 3676)]