18867680

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:268

約数の個数: 96

約数和(自身を含む): 49279104

約数和(自身を除く): 30411424

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 47, 52, 65, 80, 94, 104, 130, 160, 188, 193, 208, 235, 260, 376, 386, 416, 470, 520, 611, 752, 772, 940, 965, 1040, 1222, 1504, 1544, 1880, 1930, 2080, 2444, 2509, 3055, 3088, 3760, 3860, 4888, 5018, 6110, 6176, 7520, 7720, 9071, 9776, 10036, 12220, 12545, 15440, 18142, 19552, 20072, 24440, 25090, 30880, 36284, 40144, 45355, 48880, 50180, 72568, 80288, 90710, 97760, 100360, 117923, 145136, 181420, 200720, 235846, 290272, 362840, 401440, 471692, 589615, 725680, 943384, 1179230, 1451360, 1886768, 2358460, 3773536, 4716920, 9433840, 18867680]

約数ペア:

[(1, 18867680), (2, 9433840), (4, 4716920), (5, 3773536), (8, 2358460), (10, 1886768), (13, 1451360), (16, 1179230), (20, 943384), (26, 725680), (32, 589615), (40, 471692), (47, 401440), (52, 362840), (65, 290272), (80, 235846), (94, 200720), (104, 181420), (130, 145136), (160, 117923), (188, 100360), (193, 97760), (208, 90710), (235, 80288), (260, 72568), (376, 50180), (386, 48880), (416, 45355), (470, 40144), (520, 36284), (611, 30880), (752, 25090), (772, 24440), (940, 20072), (965, 19552), (1040, 18142), (1222, 15440), (1504, 12545), (1544, 12220), (1880, 10036), (1930, 9776), (2080, 9071), (2444, 7720), (2509, 7520), (3055, 6176), (3088, 6110), (3760, 5018), (3860, 4888)]