20606680

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 48263040

約数和(自身を除く): 27656360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 97, 113, 188, 194, 226, 235, 376, 388, 452, 470, 485, 565, 776, 904, 940, 970, 1130, 1880, 1940, 2260, 3880, 4520, 4559, 5311, 9118, 10622, 10961, 18236, 21244, 21922, 22795, 26555, 36472, 42488, 43844, 45590, 53110, 54805, 87688, 91180, 106220, 109610, 182360, 212440, 219220, 438440, 515167, 1030334, 2060668, 2575835, 4121336, 5151670, 10303340, 20606680]

約数ペア:

[(1, 20606680), (2, 10303340), (4, 5151670), (5, 4121336), (8, 2575835), (10, 2060668), (20, 1030334), (40, 515167), (47, 438440), (94, 219220), (97, 212440), (113, 182360), (188, 109610), (194, 106220), (226, 91180), (235, 87688), (376, 54805), (388, 53110), (452, 45590), (470, 43844), (485, 42488), (565, 36472), (776, 26555), (904, 22795), (940, 21922), (970, 21244), (1130, 18236), (1880, 10961), (1940, 10622), (2260, 9118), (3880, 5311), (4520, 4559)]