256270

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{523}}^1$

素因数の和:544

約数の個数: 24

約数和(自身を含む): 537624

約数和(自身を除く): 281354

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 523, 1046, 2615, 3661, 5230, 7322, 18305, 25627, 36610, 51254, 128135, 256270]

約数ペア:

[(1, 256270), (2, 128135), (5, 51254), (7, 36610), (10, 25627), (14, 18305), (35, 7322), (49, 5230), (70, 3661), (98, 2615), (245, 1046), (490, 523)]