20858481

素因数分解:

$3^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{3989}}^1$

素因数の和:4085

約数の個数: 24

約数和(自身を含む): 34856640

約数和(自身を除く): 13998159

約数列:

[1, 3, 7, 9, 21, 63, 83, 249, 581, 747, 1743, 3989, 5229, 11967, 27923, 35901, 83769, 251307, 331087, 993261, 2317609, 2979783, 6952827, 20858481]

約数ペア:

[(1, 20858481), (3, 6952827), (7, 2979783), (9, 2317609), (21, 993261), (63, 331087), (83, 251307), (249, 83769), (581, 35901), (747, 27923), (1743, 11967), (3989, 5229)]