18401440

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2447}}^1$

素因数の和:2509

約数の個数: 48

約数和(自身を含む): 44416512

約数和(自身を除く): 26015072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 80, 94, 160, 188, 235, 376, 470, 752, 940, 1504, 1880, 2447, 3760, 4894, 7520, 9788, 12235, 19576, 24470, 39152, 48940, 78304, 97880, 115009, 195760, 230018, 391520, 460036, 575045, 920072, 1150090, 1840144, 2300180, 3680288, 4600360, 9200720, 18401440]

約数ペア:

[(1, 18401440), (2, 9200720), (4, 4600360), (5, 3680288), (8, 2300180), (10, 1840144), (16, 1150090), (20, 920072), (32, 575045), (40, 460036), (47, 391520), (80, 230018), (94, 195760), (160, 115009), (188, 97880), (235, 78304), (376, 48940), (470, 39152), (752, 24470), (940, 19576), (1504, 12235), (1880, 9788), (2447, 7520), (3760, 4894)]