28126940

素因数分解:

$2^2\times 5^1\times {\mathrm{523}}^1\times {\mathrm{2689}}^1$

素因数の和:3221

約数の個数: 24

約数和(自身を含む): 59201520

約数和(自身を除く): 31074580

約数列:

[1, 2, 4, 5, 10, 20, 523, 1046, 2092, 2615, 2689, 5230, 5378, 10460, 10756, 13445, 26890, 53780, 1406347, 2812694, 5625388, 7031735, 14063470, 28126940]

約数ペア:

[(1, 28126940), (2, 14063470), (4, 7031735), (5, 5625388), (10, 2812694), (20, 1406347), (523, 53780), (1046, 26890), (2092, 13445), (2615, 10756), (2689, 10460), (5230, 5378)]