21801189

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{5387}}^1$

素因数の和:5480

約数の個数: 16

約数和(自身を含む): 31034880

約数和(自身を除く): 9233691

約数列:

[1, 3, 19, 57, 71, 213, 1349, 4047, 5387, 16161, 102353, 307059, 382477, 1147431, 7267063, 21801189]

約数ペア:

[(1, 21801189), (3, 7267063), (19, 1147431), (57, 382477), (71, 307059), (213, 102353), (1349, 16161), (4047, 5387)]