20219819781

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{722317}}^1$

素因数の和:722401

約数の個数: 32

約数和(自身を含む): 32544759808

約数和(自身を除く): 12324940027

約数列:

[1, 3, 7, 21, 31, 43, 93, 129, 217, 301, 651, 903, 1333, 3999, 9331, 27993, 722317, 2166951, 5056219, 15168657, 22391827, 31059631, 67175481, 93178893, 156742789, 217417417, 470228367, 652252251, 962848561, 2888545683, 6739939927, 20219819781]

約数ペア:

[(1, 20219819781), (3, 6739939927), (7, 2888545683), (21, 962848561), (31, 652252251), (43, 470228367), (93, 217417417), (129, 156742789), (217, 93178893), (301, 67175481), (651, 31059631), (903, 22391827), (1333, 15168657), (3999, 5056219), (9331, 2166951), (27993, 722317)]