128684120

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{68449}}^1$

素因数の和:68507

約数の個数: 32

約数和(自身を含む): 295704000

約数和(自身を除く): 167019880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 68449, 136898, 273796, 342245, 547592, 684490, 1368980, 2737960, 3217103, 6434206, 12868412, 16085515, 25736824, 32171030, 64342060, 128684120]

約数ペア:

[(1, 128684120), (2, 64342060), (4, 32171030), (5, 25736824), (8, 16085515), (10, 12868412), (20, 6434206), (40, 3217103), (47, 2737960), (94, 1368980), (188, 684490), (235, 547592), (376, 342245), (470, 273796), (940, 136898), (1880, 68449)]