15891640

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 21433160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 79, 94, 107, 158, 188, 214, 235, 316, 376, 395, 428, 470, 535, 632, 790, 856, 940, 1070, 1580, 1880, 2140, 3160, 3713, 4280, 5029, 7426, 8453, 10058, 14852, 16906, 18565, 20116, 25145, 29704, 33812, 37130, 40232, 42265, 50290, 67624, 74260, 84530, 100580, 148520, 169060, 201160, 338120, 397291, 794582, 1589164, 1986455, 3178328, 3972910, 7945820, 15891640]

約数ペア:

[(1, 15891640), (2, 7945820), (4, 3972910), (5, 3178328), (8, 1986455), (10, 1589164), (20, 794582), (40, 397291), (47, 338120), (79, 201160), (94, 169060), (107, 148520), (158, 100580), (188, 84530), (214, 74260), (235, 67624), (316, 50290), (376, 42265), (395, 40232), (428, 37130), (470, 33812), (535, 29704), (632, 25145), (790, 20116), (856, 18565), (940, 16906), (1070, 14852), (1580, 10058), (1880, 8453), (2140, 7426), (3160, 5029), (3713, 4280)]