139553780

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{78401}}^1$

素因数の和:78499

約数の個数: 24

約数和(自身を含む): 296359560

約数和(自身を除く): 156805780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 78401, 156802, 313604, 392005, 784010, 1568020, 6977689, 13955378, 27910756, 34888445, 69776890, 139553780]

約数ペア:

[(1, 139553780), (2, 69776890), (4, 34888445), (5, 27910756), (10, 13955378), (20, 6977689), (89, 1568020), (178, 784010), (356, 392005), (445, 313604), (890, 156802), (1780, 78401)]