20780881

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{409}}^1$

素因数の和:600

約数の個数: 16

約数和(自身を含む): 23616000

約数和(自身を除く): 2835119

約数列:

[1, 11, 31, 149, 341, 409, 1639, 4499, 4619, 12679, 50809, 60941, 139469, 670351, 1889171, 20780881]

約数ペア:

[(1, 20780881), (11, 1889171), (31, 670351), (149, 139469), (341, 60941), (409, 50809), (1639, 12679), (4499, 4619)]