25420180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{14281}}^1$

素因数の和:14379

約数の個数: 24

約数和(自身を含む): 53985960

約数和(自身を除く): 28565780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 14281, 28562, 57124, 71405, 142810, 285620, 1271009, 2542018, 5084036, 6355045, 12710090, 25420180]

約数ペア:

[(1, 25420180), (2, 12710090), (4, 6355045), (5, 5084036), (10, 2542018), (20, 1271009), (89, 285620), (178, 142810), (356, 71405), (445, 57124), (890, 28562), (1780, 14281)]