20874880

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^2\times {\mathrm{193}}^1$

素因数の和:238

約数の個数: 96

約数和(自身を含む): 54318060

約数和(自身を除く): 33443180

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 169, 193, 208, 260, 320, 338, 386, 416, 520, 640, 676, 772, 832, 845, 965, 1040, 1352, 1544, 1664, 1690, 1930, 2080, 2509, 2704, 3088, 3380, 3860, 4160, 5018, 5408, 6176, 6760, 7720, 8320, 10036, 10816, 12352, 12545, 13520, 15440, 20072, 21632, 24704, 25090, 27040, 30880, 32617, 40144, 50180, 54080, 61760, 65234, 80288, 100360, 108160, 123520, 130468, 160576, 163085, 200720, 260936, 321152, 326170, 401440, 521872, 652340, 802880, 1043744, 1304680, 1605760, 2087488, 2609360, 4174976, 5218720, 10437440, 20874880]

約数ペア:

[(1, 20874880), (2, 10437440), (4, 5218720), (5, 4174976), (8, 2609360), (10, 2087488), (13, 1605760), (16, 1304680), (20, 1043744), (26, 802880), (32, 652340), (40, 521872), (52, 401440), (64, 326170), (65, 321152), (80, 260936), (104, 200720), (128, 163085), (130, 160576), (160, 130468), (169, 123520), (193, 108160), (208, 100360), (260, 80288), (320, 65234), (338, 61760), (386, 54080), (416, 50180), (520, 40144), (640, 32617), (676, 30880), (772, 27040), (832, 25090), (845, 24704), (965, 21632), (1040, 20072), (1352, 15440), (1544, 13520), (1664, 12545), (1690, 12352), (1930, 10816), (2080, 10036), (2509, 8320), (2704, 7720), (3088, 6760), (3380, 6176), (3860, 5408), (4160, 5018)]