21571858

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{20011}}^1$

素因数の和:20038

約数の個数: 24

約数和(自身を含む): 41064624

約数和(自身を除く): 19492766

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 20011, 40022, 140077, 220121, 280154, 440242, 980539, 1540847, 1961078, 3081694, 10785929, 21571858]

約数ペア:

[(1, 21571858), (2, 10785929), (7, 3081694), (11, 1961078), (14, 1540847), (22, 980539), (49, 440242), (77, 280154), (98, 220121), (154, 140077), (539, 40022), (1078, 20011)]