21464740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2269}}^1$

素因数の和:2332

約数の個数: 48

約数和(自身を含む): 50339520

約数和(自身を除く): 28874780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2269, 2365, 4538, 4730, 9076, 9460, 11345, 22690, 24959, 45380, 49918, 97567, 99836, 124795, 195134, 249590, 390268, 487835, 499180, 975670, 1073237, 1951340, 2146474, 4292948, 5366185, 10732370, 21464740]

約数ペア:

[(1, 21464740), (2, 10732370), (4, 5366185), (5, 4292948), (10, 2146474), (11, 1951340), (20, 1073237), (22, 975670), (43, 499180), (44, 487835), (55, 390268), (86, 249590), (110, 195134), (172, 124795), (215, 99836), (220, 97567), (430, 49918), (473, 45380), (860, 24959), (946, 22690), (1892, 11345), (2269, 9460), (2365, 9076), (4538, 4730)]