20081721

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{7703}}^1$

素因数の和:7796

約数の個数: 16

約数和(自身を含む): 29583360

約数和(自身を除く): 9501639

約数列:

[1, 3, 11, 33, 79, 237, 869, 2607, 7703, 23109, 84733, 254199, 608537, 1825611, 6693907, 20081721]

約数ペア:

[(1, 20081721), (3, 6693907), (11, 1825611), (33, 608537), (79, 254199), (237, 84733), (869, 23109), (2607, 7703)]