18878973

素因数分解:

$3^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1\times {\mathrm{571}}^1$

素因数の和:784

約数の個数: 16

約数和(自身を含む): 25698816

約数和(自身を除く): 6819843

約数列:

[1, 3, 103, 107, 309, 321, 571, 1713, 11021, 33063, 58813, 61097, 176439, 183291, 6292991, 18878973]

約数ペア:

[(1, 18878973), (3, 6292991), (103, 183291), (107, 176439), (309, 61097), (321, 58813), (571, 33063), (1713, 11021)]