19530380

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 42577920

約数和(自身を除く): 23047540

約数列:

[1, 2, 4, 5, 10, 20, 47, 79, 94, 158, 188, 235, 263, 316, 395, 470, 526, 790, 940, 1052, 1315, 1580, 2630, 3713, 5260, 7426, 12361, 14852, 18565, 20777, 24722, 37130, 41554, 49444, 61805, 74260, 83108, 103885, 123610, 207770, 247220, 415540, 976519, 1953038, 3906076, 4882595, 9765190, 19530380]

約数ペア:

[(1, 19530380), (2, 9765190), (4, 4882595), (5, 3906076), (10, 1953038), (20, 976519), (47, 415540), (79, 247220), (94, 207770), (158, 123610), (188, 103885), (235, 83108), (263, 74260), (316, 61805), (395, 49444), (470, 41554), (526, 37130), (790, 24722), (940, 20777), (1052, 18565), (1315, 14852), (1580, 12361), (2630, 7426), (3713, 5260)]