19190980

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2417}}^1$

素因数の和:2823

約数の個数: 24

約数和(自身を含む): 40419288

約数和(自身を除く): 21228308

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 2417, 3970, 4834, 7940, 9668, 12085, 24170, 48340, 959549, 1919098, 3838196, 4797745, 9595490, 19190980]

約数ペア:

[(1, 19190980), (2, 9595490), (4, 4797745), (5, 3838196), (10, 1919098), (20, 959549), (397, 48340), (794, 24170), (1588, 12085), (1985, 9668), (2417, 7940), (3970, 4834)]