78820880

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{20963}}^1$

素因数の和:21023

約数の個数: 40

約数和(自身を含む): 187166592

約数和(自身を除く): 108345712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 20963, 41926, 83852, 104815, 167704, 209630, 335408, 419260, 838520, 985261, 1677040, 1970522, 3941044, 4926305, 7882088, 9852610, 15764176, 19705220, 39410440, 78820880]

約数ペア:

[(1, 78820880), (2, 39410440), (4, 19705220), (5, 15764176), (8, 9852610), (10, 7882088), (16, 4926305), (20, 3941044), (40, 1970522), (47, 1677040), (80, 985261), (94, 838520), (188, 419260), (235, 335408), (376, 209630), (470, 167704), (752, 104815), (940, 83852), (1880, 41926), (3760, 20963)]