20219913

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2309}}^1$

素因数の和:2461

約数の個数: 24

約数和(自身を含む): 33633600

約数和(自身を除く): 13413687

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2309, 2919, 6927, 8757, 16163, 20781, 48489, 145467, 320951, 962853, 2246657, 2888559, 6739971, 20219913]

約数ペア:

[(1, 20219913), (3, 6739971), (7, 2888559), (9, 2246657), (21, 962853), (63, 320951), (139, 145467), (417, 48489), (973, 20781), (1251, 16163), (2309, 8757), (2919, 6927)]