81764000

素因数分解:

$2^5\times 5^3\times {\mathrm{20441}}^1$

素因数の和:20466

約数の個数: 48

約数和(自身を含む): 200903976

約数和(自身を除く): 119139976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 20441, 40882, 81764, 102205, 163528, 204410, 327056, 408820, 511025, 654112, 817640, 1022050, 1635280, 2044100, 2555125, 3270560, 4088200, 5110250, 8176400, 10220500, 16352800, 20441000, 40882000, 81764000]

約数ペア:

[(1, 81764000), (2, 40882000), (4, 20441000), (5, 16352800), (8, 10220500), (10, 8176400), (16, 5110250), (20, 4088200), (25, 3270560), (32, 2555125), (40, 2044100), (50, 1635280), (80, 1022050), (100, 817640), (125, 654112), (160, 511025), (200, 408820), (250, 327056), (400, 204410), (500, 163528), (800, 102205), (1000, 81764), (2000, 40882), (4000, 20441)]