20078380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{829}}^1$

素因数の和:1018

約数の個数: 48

約数和(自身を含む): 48525120

約数和(自身を除く): 28446740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 173, 346, 692, 829, 865, 1211, 1658, 1730, 2422, 3316, 3460, 4145, 4844, 5803, 6055, 8290, 11606, 12110, 16580, 23212, 24220, 29015, 58030, 116060, 143417, 286834, 573668, 717085, 1003919, 1434170, 2007838, 2868340, 4015676, 5019595, 10039190, 20078380]

約数ペア:

[(1, 20078380), (2, 10039190), (4, 5019595), (5, 4015676), (7, 2868340), (10, 2007838), (14, 1434170), (20, 1003919), (28, 717085), (35, 573668), (70, 286834), (140, 143417), (173, 116060), (346, 58030), (692, 29015), (829, 24220), (865, 23212), (1211, 16580), (1658, 12110), (1730, 11606), (2422, 8290), (3316, 6055), (3460, 5803), (4145, 4844)]