18976720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:177

約数の個数: 120

約数和(自身を含む): 52925184

約数和(自身を除く): 33948464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 47, 49, 56, 70, 80, 94, 98, 103, 112, 140, 188, 196, 206, 235, 245, 280, 329, 376, 392, 412, 470, 490, 515, 560, 658, 721, 752, 784, 824, 940, 980, 1030, 1316, 1442, 1645, 1648, 1880, 1960, 2060, 2303, 2632, 2884, 3290, 3605, 3760, 3920, 4120, 4606, 4841, 5047, 5264, 5768, 6580, 7210, 8240, 9212, 9682, 10094, 11515, 11536, 13160, 14420, 18424, 19364, 20188, 23030, 24205, 25235, 26320, 28840, 33887, 36848, 38728, 40376, 46060, 48410, 50470, 57680, 67774, 77456, 80752, 92120, 96820, 100940, 135548, 169435, 184240, 193640, 201880, 237209, 271096, 338870, 387280, 403760, 474418, 542192, 677740, 948836, 1186045, 1355480, 1897672, 2372090, 2710960, 3795344, 4744180, 9488360, 18976720]

約数ペア:

[(1, 18976720), (2, 9488360), (4, 4744180), (5, 3795344), (7, 2710960), (8, 2372090), (10, 1897672), (14, 1355480), (16, 1186045), (20, 948836), (28, 677740), (35, 542192), (40, 474418), (47, 403760), (49, 387280), (56, 338870), (70, 271096), (80, 237209), (94, 201880), (98, 193640), (103, 184240), (112, 169435), (140, 135548), (188, 100940), (196, 96820), (206, 92120), (235, 80752), (245, 77456), (280, 67774), (329, 57680), (376, 50470), (392, 48410), (412, 46060), (470, 40376), (490, 38728), (515, 36848), (560, 33887), (658, 28840), (721, 26320), (752, 25235), (784, 24205), (824, 23030), (940, 20188), (980, 19364), (1030, 18424), (1316, 14420), (1442, 13160), (1645, 11536), (1648, 11515), (1880, 10094), (1960, 9682), (2060, 9212), (2303, 8240), (2632, 7210), (2884, 6580), (3290, 5768), (3605, 5264), (3760, 5047), (3920, 4841), (4120, 4606)]