2109137855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1237031}}^1$

素因数の和:1237078

約数の個数: 16

約数和(自身を含む): 2850121728

約数和(自身を除く): 740983873

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 1237031, 6185155, 13607341, 38347961, 68036705, 191739805, 421827571, 2109137855]

約数ペア:

[(1, 2109137855), (5, 421827571), (11, 191739805), (31, 68036705), (55, 38347961), (155, 13607341), (341, 6185155), (1705, 1237031)]