20493918

素因数分解:

$2^1\times 3^3\times {\mathrm{191}}^1\times {\mathrm{1987}}^1$

素因数の和:2189

約数の個数: 32

約数和(自身を含む): 45803520

約数和(自身を除く): 25309602

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 191, 382, 573, 1146, 1719, 1987, 3438, 3974, 5157, 5961, 10314, 11922, 17883, 35766, 53649, 107298, 379517, 759034, 1138551, 2277102, 3415653, 6831306, 10246959, 20493918]

約数ペア:

[(1, 20493918), (2, 10246959), (3, 6831306), (6, 3415653), (9, 2277102), (18, 1138551), (27, 759034), (54, 379517), (191, 107298), (382, 53649), (573, 35766), (1146, 17883), (1719, 11922), (1987, 10314), (3438, 5961), (3974, 5157)]