256401790

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{235231}}^1$

素因数の和:235347

約数の個数: 16

約数和(自身を含む): 465759360

約数和(自身を除く): 209357570

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 235231, 470462, 1176155, 2352310, 25640179, 51280358, 128200895, 256401790]

約数ペア:

[(1, 256401790), (2, 128200895), (5, 51280358), (10, 25640179), (109, 2352310), (218, 1176155), (545, 470462), (1090, 235231)]