18911572

素因数分解:

$2^2\times {\mathrm{43}}^2\times {\mathrm{2557}}^1$

素因数の和:2647

約数の個数: 18

約数和(自身を含む): 33896058

約数和(自身を除く): 14984486

約数列:

[1, 2, 4, 43, 86, 172, 1849, 2557, 3698, 5114, 7396, 10228, 109951, 219902, 439804, 4727893, 9455786, 18911572]

約数ペア:

[(1, 18911572), (2, 9455786), (4, 4727893), (43, 439804), (86, 219902), (172, 109951), (1849, 10228), (2557, 7396), (3698, 5114)]