19741520

素因数分解:

$2^4\times 5^1\times {\mathrm{246769}}^1$

素因数の和:246782

約数の個数: 20

約数和(自身を含む): 45899220

約数和(自身を除く): 26157700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246769, 493538, 987076, 1233845, 1974152, 2467690, 3948304, 4935380, 9870760, 19741520]

約数ペア:

[(1, 19741520), (2, 9870760), (4, 4935380), (5, 3948304), (8, 2467690), (10, 1974152), (16, 1233845), (20, 987076), (40, 493538), (80, 246769)]