19915810

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^2\times {\mathrm{709}}^1$

素因数の和:822

約数の個数: 24

約数和(自身を含む): 36589140

約数和(自身を除く): 16673330

約数列:

[1, 2, 5, 10, 53, 106, 265, 530, 709, 1418, 2809, 3545, 5618, 7090, 14045, 28090, 37577, 75154, 187885, 375770, 1991581, 3983162, 9957905, 19915810]

約数ペア:

[(1, 19915810), (2, 9957905), (5, 3983162), (10, 1991581), (53, 375770), (106, 187885), (265, 75154), (530, 37577), (709, 28090), (1418, 14045), (2809, 7090), (3545, 5618)]