30880880

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:294

約数の個数: 80

約数和(自身を含む): 75423744

約数和(自身を除く): 44542864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 47, 80, 86, 94, 172, 188, 191, 215, 235, 344, 376, 382, 430, 470, 688, 752, 764, 860, 940, 955, 1528, 1720, 1880, 1910, 2021, 3056, 3440, 3760, 3820, 4042, 7640, 8084, 8213, 8977, 10105, 15280, 16168, 16426, 17954, 20210, 32336, 32852, 35908, 40420, 41065, 44885, 65704, 71816, 80840, 82130, 89770, 131408, 143632, 161680, 164260, 179540, 328520, 359080, 386011, 657040, 718160, 772022, 1544044, 1930055, 3088088, 3860110, 6176176, 7720220, 15440440, 30880880]

約数ペア:

[(1, 30880880), (2, 15440440), (4, 7720220), (5, 6176176), (8, 3860110), (10, 3088088), (16, 1930055), (20, 1544044), (40, 772022), (43, 718160), (47, 657040), (80, 386011), (86, 359080), (94, 328520), (172, 179540), (188, 164260), (191, 161680), (215, 143632), (235, 131408), (344, 89770), (376, 82130), (382, 80840), (430, 71816), (470, 65704), (688, 44885), (752, 41065), (764, 40420), (860, 35908), (940, 32852), (955, 32336), (1528, 20210), (1720, 17954), (1880, 16426), (1910, 16168), (2021, 15280), (3056, 10105), (3440, 8977), (3760, 8213), (3820, 8084), (4042, 7640)]