19711805

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{947}}^1$

素因数の和:1156

約数の個数: 16

約数和(自身を含む): 24845184

約数和(自身を除く): 5133379

約数列:

[1, 5, 23, 115, 181, 905, 947, 4163, 4735, 20815, 21781, 108905, 171407, 857035, 3942361, 19711805]

約数ペア:

[(1, 19711805), (5, 3942361), (23, 857035), (115, 171407), (181, 108905), (905, 21781), (947, 20815), (4163, 4735)]