20026780

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11251}}^1$

素因数の和:11349

約数の個数: 24

約数和(自身を含む): 42532560

約数和(自身を除く): 22505780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 11251, 22502, 45004, 56255, 112510, 225020, 1001339, 2002678, 4005356, 5006695, 10013390, 20026780]

約数ペア:

[(1, 20026780), (2, 10013390), (4, 5006695), (5, 4005356), (10, 2002678), (20, 1001339), (89, 225020), (178, 112510), (356, 56255), (445, 45004), (890, 22502), (1780, 11251)]