81490400

素因数分解:

$2^5\times 5^2\times {\mathrm{101863}}^1$

素因数の和:101883

約数の個数: 36

約数和(自身を含む): 198940392

約数和(自身を除く): 117449992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 101863, 203726, 407452, 509315, 814904, 1018630, 1629808, 2037260, 2546575, 3259616, 4074520, 5093150, 8149040, 10186300, 16298080, 20372600, 40745200, 81490400]

約数ペア:

[(1, 81490400), (2, 40745200), (4, 20372600), (5, 16298080), (8, 10186300), (10, 8149040), (16, 5093150), (20, 4074520), (25, 3259616), (32, 2546575), (40, 2037260), (50, 1629808), (80, 1018630), (100, 814904), (160, 509315), (200, 407452), (400, 203726), (800, 101863)]