64344400

素因数分解:

$2^4\times 5^2\times {\mathrm{160861}}^1$

素因数の和:160879

約数の個数: 30

約数和(自身を含む): 154588382

約数和(自身を除く): 90243982

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 160861, 321722, 643444, 804305, 1286888, 1608610, 2573776, 3217220, 4021525, 6434440, 8043050, 12868880, 16086100, 32172200, 64344400]

約数ペア:

[(1, 64344400), (2, 32172200), (4, 16086100), (5, 12868880), (8, 8043050), (10, 6434440), (16, 4021525), (20, 3217220), (25, 2573776), (40, 1608610), (50, 1286888), (80, 804305), (100, 643444), (200, 321722), (400, 160861)]