21403400

素因数分解:

$2^3\times 5^2\times {\mathrm{103}}^1\times {\mathrm{1039}}^1$

素因数の和:1158

約数の個数: 48

約数和(自身を含む): 50294400

約数和(自身を除く): 28891000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 103, 200, 206, 412, 515, 824, 1030, 1039, 2060, 2078, 2575, 4120, 4156, 5150, 5195, 8312, 10300, 10390, 20600, 20780, 25975, 41560, 51950, 103900, 107017, 207800, 214034, 428068, 535085, 856136, 1070170, 2140340, 2675425, 4280680, 5350850, 10701700, 21403400]

約数ペア:

[(1, 21403400), (2, 10701700), (4, 5350850), (5, 4280680), (8, 2675425), (10, 2140340), (20, 1070170), (25, 856136), (40, 535085), (50, 428068), (100, 214034), (103, 207800), (200, 107017), (206, 103900), (412, 51950), (515, 41560), (824, 25975), (1030, 20780), (1039, 20600), (2060, 10390), (2078, 10300), (2575, 8312), (4120, 5195), (4156, 5150)]