19940450

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{4481}}^1$

素因数の和:4582

約数の個数: 24

約数和(自身を含む): 37514340

約数和(自身を除く): 17573890

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 890, 2225, 4450, 4481, 8962, 22405, 44810, 112025, 224050, 398809, 797618, 1994045, 3988090, 9970225, 19940450]

約数ペア:

[(1, 19940450), (2, 9970225), (5, 3988090), (10, 1994045), (25, 797618), (50, 398809), (89, 224050), (178, 112025), (445, 44810), (890, 22405), (2225, 8962), (4450, 4481)]