18087520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:308

約数の個数: 96

約数和(自身を含む): 47900160

約数和(自身を除く): 29812640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 43, 44, 55, 80, 86, 88, 110, 160, 172, 176, 215, 220, 239, 344, 352, 430, 440, 473, 478, 688, 860, 880, 946, 956, 1195, 1376, 1720, 1760, 1892, 1912, 2365, 2390, 2629, 3440, 3784, 3824, 4730, 4780, 5258, 6880, 7568, 7648, 9460, 9560, 10277, 10516, 13145, 15136, 18920, 19120, 20554, 21032, 26290, 37840, 38240, 41108, 42064, 51385, 52580, 75680, 82216, 84128, 102770, 105160, 113047, 164432, 205540, 210320, 226094, 328864, 411080, 420640, 452188, 565235, 822160, 904376, 1130470, 1644320, 1808752, 2260940, 3617504, 4521880, 9043760, 18087520]

約数ペア:

[(1, 18087520), (2, 9043760), (4, 4521880), (5, 3617504), (8, 2260940), (10, 1808752), (11, 1644320), (16, 1130470), (20, 904376), (22, 822160), (32, 565235), (40, 452188), (43, 420640), (44, 411080), (55, 328864), (80, 226094), (86, 210320), (88, 205540), (110, 164432), (160, 113047), (172, 105160), (176, 102770), (215, 84128), (220, 82216), (239, 75680), (344, 52580), (352, 51385), (430, 42064), (440, 41108), (473, 38240), (478, 37840), (688, 26290), (860, 21032), (880, 20554), (946, 19120), (956, 18920), (1195, 15136), (1376, 13145), (1720, 10516), (1760, 10277), (1892, 9560), (1912, 9460), (2365, 7648), (2390, 7568), (2629, 6880), (3440, 5258), (3784, 4780), (3824, 4730)]