1287740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{67}}^1$

素因数の和:138

約数の個数: 36

約数和(自身を含む): 2836008

約数和(自身を除く): 1548268

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 67, 124, 134, 155, 268, 310, 335, 620, 670, 961, 1340, 1922, 2077, 3844, 4154, 4805, 8308, 9610, 10385, 19220, 20770, 41540, 64387, 128774, 257548, 321935, 643870, 1287740]

約数ペア:

[(1, 1287740), (2, 643870), (4, 321935), (5, 257548), (10, 128774), (20, 64387), (31, 41540), (62, 20770), (67, 19220), (124, 10385), (134, 9610), (155, 8308), (268, 4805), (310, 4154), (335, 3844), (620, 2077), (670, 1922), (961, 1340)]