19928935

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{3881}}^1$

素因数の和:3978

約数の個数: 16

約数和(自身を含む): 26087040

約数和(自身を除く): 6158105

約数列:

[1, 5, 13, 65, 79, 395, 1027, 3881, 5135, 19405, 50453, 252265, 306599, 1532995, 3985787, 19928935]

約数ペア:

[(1, 19928935), (5, 3985787), (13, 1532995), (65, 306599), (79, 252265), (395, 50453), (1027, 19405), (3881, 5135)]