20553351

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{953}}^1$

素因数の和:1055

約数の個数: 32

約数和(自身を含む): 34191360

約数和(自身を除く): 13638009

約数列:

[1, 3, 7, 13, 21, 39, 79, 91, 237, 273, 553, 953, 1027, 1659, 2859, 3081, 6671, 7189, 12389, 20013, 21567, 37167, 75287, 86723, 225861, 260169, 527009, 978731, 1581027, 2936193, 6851117, 20553351]

約数ペア:

[(1, 20553351), (3, 6851117), (7, 2936193), (13, 1581027), (21, 978731), (39, 527009), (79, 260169), (91, 225861), (237, 86723), (273, 75287), (553, 37167), (953, 21567), (1027, 20013), (1659, 12389), (2859, 7189), (3081, 6671)]