19681540

素因数分解:

$2^2\times 5^1\times {\mathrm{881}}^1\times {\mathrm{1117}}^1$

素因数の和:2007

約数の個数: 24

約数和(自身を含む): 41415192

約数和(自身を除く): 21733652

約数列:

[1, 2, 4, 5, 10, 20, 881, 1117, 1762, 2234, 3524, 4405, 4468, 5585, 8810, 11170, 17620, 22340, 984077, 1968154, 3936308, 4920385, 9840770, 19681540]

約数ペア:

[(1, 19681540), (2, 9840770), (4, 4920385), (5, 3936308), (10, 1968154), (20, 984077), (881, 22340), (1117, 17620), (1762, 11170), (2234, 8810), (3524, 5585), (4405, 4468)]