20280981

素因数分解:

$3^1\times 7^1\times {\mathrm{167}}^1\times {\mathrm{5783}}^1$

素因数の和:5960

約数の個数: 16

約数和(自身を含む): 31094784

約数和(自身を除く): 10813803

約数列:

[1, 3, 7, 21, 167, 501, 1169, 3507, 5783, 17349, 40481, 121443, 965761, 2897283, 6760327, 20280981]

約数ペア:

[(1, 20280981), (3, 6760327), (7, 2897283), (21, 965761), (167, 121443), (501, 40481), (1169, 17349), (3507, 5783)]