20181945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2633}}^1$

素因数の和:2721

約数の個数: 32

約数和(自身を含む): 37423872

約数和(自身を除く): 17241927

約数列:

[1, 3, 5, 7, 15, 21, 35, 73, 105, 219, 365, 511, 1095, 1533, 2555, 2633, 7665, 7899, 13165, 18431, 39495, 55293, 92155, 192209, 276465, 576627, 961045, 1345463, 2883135, 4036389, 6727315, 20181945]

約数ペア:

[(1, 20181945), (3, 6727315), (5, 4036389), (7, 2883135), (15, 1345463), (21, 961045), (35, 576627), (73, 276465), (105, 192209), (219, 92155), (365, 55293), (511, 39495), (1095, 18431), (1533, 13165), (2555, 7899), (2633, 7665)]