20179920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1789}}^1$

素因数の和:1852

約数の個数: 80

約数和(自身を含む): 63924480

約数和(自身を除く): 43744560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 47, 48, 60, 80, 94, 120, 141, 188, 235, 240, 282, 376, 470, 564, 705, 752, 940, 1128, 1410, 1789, 1880, 2256, 2820, 3578, 3760, 5367, 5640, 7156, 8945, 10734, 11280, 14312, 17890, 21468, 26835, 28624, 35780, 42936, 53670, 71560, 84083, 85872, 107340, 143120, 168166, 214680, 252249, 336332, 420415, 429360, 504498, 672664, 840830, 1008996, 1261245, 1345328, 1681660, 2017992, 2522490, 3363320, 4035984, 5044980, 6726640, 10089960, 20179920]

約数ペア:

[(1, 20179920), (2, 10089960), (3, 6726640), (4, 5044980), (5, 4035984), (6, 3363320), (8, 2522490), (10, 2017992), (12, 1681660), (15, 1345328), (16, 1261245), (20, 1008996), (24, 840830), (30, 672664), (40, 504498), (47, 429360), (48, 420415), (60, 336332), (80, 252249), (94, 214680), (120, 168166), (141, 143120), (188, 107340), (235, 85872), (240, 84083), (282, 71560), (376, 53670), (470, 42936), (564, 35780), (705, 28624), (752, 26835), (940, 21468), (1128, 17890), (1410, 14312), (1789, 11280), (1880, 10734), (2256, 8945), (2820, 7156), (3578, 5640), (3760, 5367)]