20420874

素因数分解:

$2^1\times 3^2\times {\mathrm{73}}^1\times {\mathrm{15541}}^1$

素因数の和:15622

約数の個数: 24

約数和(自身を含む): 44854212

約数和(自身を除く): 24433338

約数列:

[1, 2, 3, 6, 9, 18, 73, 146, 219, 438, 657, 1314, 15541, 31082, 46623, 93246, 139869, 279738, 1134493, 2268986, 3403479, 6806958, 10210437, 20420874]

約数ペア:

[(1, 20420874), (2, 10210437), (3, 6806958), (6, 3403479), (9, 2268986), (18, 1134493), (73, 279738), (146, 139869), (219, 93246), (438, 46623), (657, 31082), (1314, 15541)]