8649880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 20528640

約数和(自身を除く): 11878760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 47, 86, 94, 107, 172, 188, 214, 215, 235, 344, 376, 428, 430, 470, 535, 856, 860, 940, 1070, 1720, 1880, 2021, 2140, 4042, 4280, 4601, 5029, 8084, 9202, 10058, 10105, 16168, 18404, 20116, 20210, 23005, 25145, 36808, 40232, 40420, 46010, 50290, 80840, 92020, 100580, 184040, 201160, 216247, 432494, 864988, 1081235, 1729976, 2162470, 4324940, 8649880]

約数ペア:

[(1, 8649880), (2, 4324940), (4, 2162470), (5, 1729976), (8, 1081235), (10, 864988), (20, 432494), (40, 216247), (43, 201160), (47, 184040), (86, 100580), (94, 92020), (107, 80840), (172, 50290), (188, 46010), (214, 40420), (215, 40232), (235, 36808), (344, 25145), (376, 23005), (428, 20210), (430, 20116), (470, 18404), (535, 16168), (856, 10105), (860, 10058), (940, 9202), (1070, 8084), (1720, 5029), (1880, 4601), (2021, 4280), (2140, 4042)]