21864855

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{311}}^1$

素因数の和:471

約数の個数: 32

約数和(自身を含む): 36241920

約数和(自身を除く): 14377065

約数列:

[1, 3, 5, 15, 43, 109, 129, 215, 311, 327, 545, 645, 933, 1555, 1635, 4665, 4687, 13373, 14061, 23435, 33899, 40119, 66865, 70305, 101697, 169495, 200595, 508485, 1457657, 4372971, 7288285, 21864855]

約数ペア:

[(1, 21864855), (3, 7288285), (5, 4372971), (15, 1457657), (43, 508485), (109, 200595), (129, 169495), (215, 101697), (311, 70305), (327, 66865), (545, 40119), (645, 33899), (933, 23435), (1555, 14061), (1635, 13373), (4665, 4687)]