81881600

素因数分解:

$2^9\times 5^2\times {\mathrm{6397}}^1$

素因数の和:6425

約数の個数: 60

約数和(自身を含む): 202899774

約数和(自身を除く): 121018174

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 1280, 1600, 2560, 3200, 6397, 6400, 12794, 12800, 25588, 31985, 51176, 63970, 102352, 127940, 159925, 204704, 255880, 319850, 409408, 511760, 639700, 818816, 1023520, 1279400, 1637632, 2047040, 2558800, 3275264, 4094080, 5117600, 8188160, 10235200, 16376320, 20470400, 40940800, 81881600]

約数ペア:

[(1, 81881600), (2, 40940800), (4, 20470400), (5, 16376320), (8, 10235200), (10, 8188160), (16, 5117600), (20, 4094080), (25, 3275264), (32, 2558800), (40, 2047040), (50, 1637632), (64, 1279400), (80, 1023520), (100, 818816), (128, 639700), (160, 511760), (200, 409408), (256, 319850), (320, 255880), (400, 204704), (512, 159925), (640, 127940), (800, 102352), (1280, 63970), (1600, 51176), (2560, 31985), (3200, 25588), (6397, 12800), (6400, 12794)]