126864580

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{12919}}^1$

素因数の和:13419

約数の個数: 24

約数和(自身を含む): 266978880

約数和(自身を除く): 140114300

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 9820, 12919, 25838, 51676, 64595, 129190, 258380, 6343229, 12686458, 25372916, 31716145, 63432290, 126864580]

約数ペア:

[(1, 126864580), (2, 63432290), (4, 31716145), (5, 25372916), (10, 12686458), (20, 6343229), (491, 258380), (982, 129190), (1964, 64595), (2455, 51676), (4910, 25838), (9820, 12919)]