251019567

素因数分解:

$3^4\times {\mathrm{197}}^1\times {\mathrm{15731}}^1$

素因数の和:15940

約数の個数: 20

約数和(自身を含む): 376907256

約数和(自身を除く): 125887689

約数列:

[1, 3, 9, 27, 81, 197, 591, 1773, 5319, 15731, 15957, 47193, 141579, 424737, 1274211, 3099007, 9297021, 27891063, 83673189, 251019567]

約数ペア:

[(1, 251019567), (3, 83673189), (9, 27891063), (27, 9297021), (81, 3099007), (197, 1274211), (591, 424737), (1773, 141579), (5319, 47193), (15731, 15957)]