20319220

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23627}}^1$

素因数の和:23679

約数の個数: 24

約数和(自身を含む): 43664544

約数和(自身を除く): 23345324

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23627, 47254, 94508, 118135, 236270, 472540, 1015961, 2031922, 4063844, 5079805, 10159610, 20319220]

約数ペア:

[(1, 20319220), (2, 10159610), (4, 5079805), (5, 4063844), (10, 2031922), (20, 1015961), (43, 472540), (86, 236270), (172, 118135), (215, 94508), (430, 47254), (860, 23627)]