20639031

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{23971}}^1$

素因数の和:24022

約数の個数: 16

約数和(自身を含む): 32218368

約数和(自身を除く): 11579337

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 23971, 71913, 167797, 503391, 982811, 2948433, 6879677, 20639031]

約数ペア:

[(1, 20639031), (3, 6879677), (7, 2948433), (21, 982811), (41, 503391), (123, 167797), (287, 71913), (861, 23971)]