15440440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 21054920

約数列:

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

約数ペア:

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