639198340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2905447}}^1$

素因数の和:2905467

約数の個数: 24

約数和(自身を含む): 1464345792

約数和(自身を除く): 825147452

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 2905447, 5810894, 11621788, 14527235, 29054470, 31959917, 58108940, 63919834, 127839668, 159799585, 319599170, 639198340]

約数ペア:

[(1, 639198340), (2, 319599170), (4, 159799585), (5, 127839668), (10, 63919834), (11, 58108940), (20, 31959917), (22, 29054470), (44, 14527235), (55, 11621788), (110, 5810894), (220, 2905447)]