207936981

素因数分解:

$3^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{20249}}^1$

素因数の和:20425

約数の個数: 24

約数和(自身を含む): 345384000

約数和(自身を除く): 137447019

約数列:

[1, 3, 7, 9, 21, 63, 163, 489, 1141, 1467, 3423, 10269, 20249, 60747, 141743, 182241, 425229, 1275687, 3300587, 9901761, 23104109, 29705283, 69312327, 207936981]

約数ペア:

[(1, 207936981), (3, 69312327), (7, 29705283), (9, 23104109), (21, 9901761), (63, 3300587), (163, 1275687), (489, 425229), (1141, 182241), (1467, 141743), (3423, 60747), (10269, 20249)]