21788179

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{853}}^1$

素因数の和:990

約数の個数: 16

約数和(自身を含む): 25824960

約数和(自身を除く): 4036781

約数列:

[1, 7, 41, 89, 287, 623, 853, 3649, 5971, 25543, 34973, 75917, 244811, 531419, 3112597, 21788179]

約数ペア:

[(1, 21788179), (7, 3112597), (41, 531419), (89, 244811), (287, 75917), (623, 34973), (853, 25543), (3649, 5971)]