18840155

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1\times {\mathrm{277}}^1$

素因数の和:566

約数の個数: 16

約数和(自身を含む): 23165184

約数和(自身を除く): 4325029

約数列:

[1, 5, 61, 223, 277, 305, 1115, 1385, 13603, 16897, 61771, 68015, 84485, 308855, 3768031, 18840155]

約数ペア:

[(1, 18840155), (5, 3768031), (61, 308855), (223, 84485), (277, 68015), (305, 61771), (1115, 16897), (1385, 13603)]