131490400

素因数分解:

$2^5\times 5^2\times {\mathrm{164363}}^1$

素因数の和:164383

約数の個数: 36

約数和(自身を含む): 321002892

約数和(自身を除く): 189512492

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 164363, 328726, 657452, 821815, 1314904, 1643630, 2629808, 3287260, 4109075, 5259616, 6574520, 8218150, 13149040, 16436300, 26298080, 32872600, 65745200, 131490400]

約数ペア:

[(1, 131490400), (2, 65745200), (4, 32872600), (5, 26298080), (8, 16436300), (10, 13149040), (16, 8218150), (20, 6574520), (25, 5259616), (32, 4109075), (40, 3287260), (50, 2629808), (80, 1643630), (100, 1314904), (160, 821815), (200, 657452), (400, 328726), (800, 164363)]