18898475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{839}}^1$

素因数の和:919

約数の個数: 24

約数和(自身を含む): 25310880

約数和(自身を除く): 6412405

約数列:

[1, 5, 17, 25, 53, 85, 265, 425, 839, 901, 1325, 4195, 4505, 14263, 20975, 22525, 44467, 71315, 222335, 356575, 755939, 1111675, 3779695, 18898475]

約数ペア:

[(1, 18898475), (5, 3779695), (17, 1111675), (25, 755939), (53, 356575), (85, 222335), (265, 71315), (425, 44467), (839, 22525), (901, 20975), (1325, 14263), (4195, 4505)]