81256844

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{20173}}^1$

素因数の和:20249

約数の個数: 24

約数和(自身を含む): 152515440

約数和(自身を除く): 71258596

約数列:

[1, 2, 4, 19, 38, 53, 76, 106, 212, 1007, 2014, 4028, 20173, 40346, 80692, 383287, 766574, 1069169, 1533148, 2138338, 4276676, 20314211, 40628422, 81256844]

約数ペア:

[(1, 81256844), (2, 40628422), (4, 20314211), (19, 4276676), (38, 2138338), (53, 1533148), (76, 1069169), (106, 766574), (212, 383287), (1007, 80692), (2014, 40346), (4028, 20173)]