19995700

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{4877}}^1$

素因数の和:4932

約数の個数: 36

約数和(自身を含む): 44458092

約数和(自身を除く): 24462392

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 4877, 9754, 19508, 24385, 48770, 97540, 121925, 199957, 243850, 399914, 487700, 799828, 999785, 1999570, 3999140, 4998925, 9997850, 19995700]

約数ペア:

[(1, 19995700), (2, 9997850), (4, 4998925), (5, 3999140), (10, 1999570), (20, 999785), (25, 799828), (41, 487700), (50, 399914), (82, 243850), (100, 199957), (164, 121925), (205, 97540), (410, 48770), (820, 24385), (1025, 19508), (2050, 9754), (4100, 4877)]