18987910

素因数分解:

$2^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{22877}}^1$

素因数の和:22967

約数の個数: 16

約数和(自身を含む): 34591536

約数和(自身を除く): 15603626

約数列:

[1, 2, 5, 10, 83, 166, 415, 830, 22877, 45754, 114385, 228770, 1898791, 3797582, 9493955, 18987910]

約数ペア:

[(1, 18987910), (2, 9493955), (5, 3797582), (10, 1898791), (83, 228770), (166, 114385), (415, 45754), (830, 22877)]