21588800

素因数分解:

$2^6\times 5^2\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:256

約数の個数: 84

約数和(自身を含む): 54047136

約数和(自身を除く): 32458336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 103, 131, 160, 200, 206, 262, 320, 400, 412, 515, 524, 655, 800, 824, 1030, 1048, 1310, 1600, 1648, 2060, 2096, 2575, 2620, 3275, 3296, 4120, 4192, 5150, 5240, 6550, 6592, 8240, 8384, 10300, 10480, 13100, 13493, 16480, 20600, 20960, 26200, 26986, 32960, 41200, 41920, 52400, 53972, 67465, 82400, 104800, 107944, 134930, 164800, 209600, 215888, 269860, 337325, 431776, 539720, 674650, 863552, 1079440, 1349300, 2158880, 2698600, 4317760, 5397200, 10794400, 21588800]

約数ペア:

[(1, 21588800), (2, 10794400), (4, 5397200), (5, 4317760), (8, 2698600), (10, 2158880), (16, 1349300), (20, 1079440), (25, 863552), (32, 674650), (40, 539720), (50, 431776), (64, 337325), (80, 269860), (100, 215888), (103, 209600), (131, 164800), (160, 134930), (200, 107944), (206, 104800), (262, 82400), (320, 67465), (400, 53972), (412, 52400), (515, 41920), (524, 41200), (655, 32960), (800, 26986), (824, 26200), (1030, 20960), (1048, 20600), (1310, 16480), (1600, 13493), (1648, 13100), (2060, 10480), (2096, 10300), (2575, 8384), (2620, 8240), (3275, 6592), (3296, 6550), (4120, 5240), (4192, 5150)]