66871280

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{2437}}^1$

素因数の和:2471

約数の個数: 80

約数和(自身を含む): 181387200

約数和(自身を除く): 114515920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1960, 2437, 2744, 3430, 3920, 4874, 5488, 6860, 9748, 12185, 13720, 17059, 19496, 24370, 27440, 34118, 38992, 48740, 68236, 85295, 97480, 119413, 136472, 170590, 194960, 238826, 272944, 341180, 477652, 597065, 682360, 835891, 955304, 1194130, 1364720, 1671782, 1910608, 2388260, 3343564, 4179455, 4776520, 6687128, 8358910, 9553040, 13374256, 16717820, 33435640, 66871280]

約数ペア:

[(1, 66871280), (2, 33435640), (4, 16717820), (5, 13374256), (7, 9553040), (8, 8358910), (10, 6687128), (14, 4776520), (16, 4179455), (20, 3343564), (28, 2388260), (35, 1910608), (40, 1671782), (49, 1364720), (56, 1194130), (70, 955304), (80, 835891), (98, 682360), (112, 597065), (140, 477652), (196, 341180), (245, 272944), (280, 238826), (343, 194960), (392, 170590), (490, 136472), (560, 119413), (686, 97480), (784, 85295), (980, 68236), (1372, 48740), (1715, 38992), (1960, 34118), (2437, 27440), (2744, 24370), (3430, 19496), (3920, 17059), (4874, 13720), (5488, 12185), (6860, 9748)]