19728784

素因数分解:

$2^4\times {\mathrm{577}}^1\times {\mathrm{2137}}^1$

素因数の和:2722

約数の個数: 20

約数和(自身を含む): 38308684

約数和(自身を除く): 18579900

約数列:

[1, 2, 4, 8, 16, 577, 1154, 2137, 2308, 4274, 4616, 8548, 9232, 17096, 34192, 1233049, 2466098, 4932196, 9864392, 19728784]

約数ペア:

[(1, 19728784), (2, 9864392), (4, 4932196), (8, 2466098), (16, 1233049), (577, 34192), (1154, 17096), (2137, 9232), (2308, 8548), (4274, 4616)]