18879460

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1459}}^1$

素因数の和:2115

約数の個数: 24

約数和(自身を含む): 39735360

約数和(自身を除く): 20855900

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 1459, 2588, 2918, 3235, 5836, 6470, 7295, 12940, 14590, 29180, 943973, 1887946, 3775892, 4719865, 9439730, 18879460]

約数ペア:

[(1, 18879460), (2, 9439730), (4, 4719865), (5, 3775892), (10, 1887946), (20, 943973), (647, 29180), (1294, 14590), (1459, 12940), (2588, 7295), (2918, 6470), (3235, 5836)]