1800145940

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{140417}}^1$

素因数の和:141067

約数の個数: 24

約数和(自身を含む): 3786230952

約数和(自身を除く): 1986085012

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 6410, 12820, 140417, 280834, 561668, 702085, 1404170, 2808340, 90007297, 180014594, 360029188, 450036485, 900072970, 1800145940]

約数ペア:

[(1, 1800145940), (2, 900072970), (4, 450036485), (5, 360029188), (10, 180014594), (20, 90007297), (641, 2808340), (1282, 1404170), (2564, 702085), (3205, 561668), (6410, 280834), (12820, 140417)]