18526760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{521}}^1$

素因数の和:666

約数の個数: 64

約数和(自身を含む): 48107520

約数和(自身を除く): 29580760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 127, 140, 254, 280, 508, 521, 635, 889, 1016, 1042, 1270, 1778, 2084, 2540, 2605, 3556, 3647, 4168, 4445, 5080, 5210, 7112, 7294, 8890, 10420, 14588, 17780, 18235, 20840, 29176, 35560, 36470, 66167, 72940, 132334, 145880, 264668, 330835, 463169, 529336, 661670, 926338, 1323340, 1852676, 2315845, 2646680, 3705352, 4631690, 9263380, 18526760]

約数ペア:

[(1, 18526760), (2, 9263380), (4, 4631690), (5, 3705352), (7, 2646680), (8, 2315845), (10, 1852676), (14, 1323340), (20, 926338), (28, 661670), (35, 529336), (40, 463169), (56, 330835), (70, 264668), (127, 145880), (140, 132334), (254, 72940), (280, 66167), (508, 36470), (521, 35560), (635, 29176), (889, 20840), (1016, 18235), (1042, 17780), (1270, 14588), (1778, 10420), (2084, 8890), (2540, 7294), (2605, 7112), (3556, 5210), (3647, 5080), (4168, 4445)]