19972264

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{1061}}^1$

素因数の和:1261

約数の個数: 32

約数和(自身を含む): 40589640

約数和(自身を除く): 20617376

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 181, 362, 724, 1061, 1448, 2122, 2353, 4244, 4706, 8488, 9412, 13793, 18824, 27586, 55172, 110344, 192041, 384082, 768164, 1536328, 2496533, 4993066, 9986132, 19972264]

約数ペア:

[(1, 19972264), (2, 9986132), (4, 4993066), (8, 2496533), (13, 1536328), (26, 768164), (52, 384082), (104, 192041), (181, 110344), (362, 55172), (724, 27586), (1061, 18824), (1448, 13793), (2122, 9412), (2353, 8488), (4244, 4706)]