643987251

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{22037}}^1$

素因数の和:22251

約数の個数: 24

約数和(自身を含む): 990123264

約数和(自身を除く): 346136013

約数列:

[1, 3, 9, 17, 51, 153, 191, 573, 1719, 3247, 9741, 22037, 29223, 66111, 198333, 374629, 1123887, 3371661, 4209067, 12627201, 37881603, 71554139, 214662417, 643987251]

約数ペア:

[(1, 643987251), (3, 214662417), (9, 71554139), (17, 37881603), (51, 12627201), (153, 4209067), (191, 3371661), (573, 1123887), (1719, 374629), (3247, 198333), (9741, 66111), (22037, 29223)]