20470400

素因数分解:

$2^7\times 5^2\times {\mathrm{6397}}^1$

素因数の和:6421

約数の個数: 48

約数和(自身を含む): 50576190

約数和(自身を除く): 30105790

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6397, 12794, 25588, 31985, 51176, 63970, 102352, 127940, 159925, 204704, 255880, 319850, 409408, 511760, 639700, 818816, 1023520, 1279400, 2047040, 2558800, 4094080, 5117600, 10235200, 20470400]

約数ペア:

[(1, 20470400), (2, 10235200), (4, 5117600), (5, 4094080), (8, 2558800), (10, 2047040), (16, 1279400), (20, 1023520), (25, 818816), (32, 639700), (40, 511760), (50, 409408), (64, 319850), (80, 255880), (100, 204704), (128, 159925), (160, 127940), (200, 102352), (320, 63970), (400, 51176), (640, 31985), (800, 25588), (1600, 12794), (3200, 6397)]