21657392

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{6871}}^1$

素因数の和:7076

約数の個数: 20

約数和(自身を含む): 42180336

約数和(自身を除く): 20522944

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 6871, 13742, 27484, 54968, 109936, 1353587, 2707174, 5414348, 10828696, 21657392]

約数ペア:

[(1, 21657392), (2, 10828696), (4, 5414348), (8, 2707174), (16, 1353587), (197, 109936), (394, 54968), (788, 27484), (1576, 13742), (3152, 6871)]