261783

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1$

素因数の和:111

約数の個数: 24

約数和(自身を含む): 421200

約数和(自身を除く): 159417

約数列:

[1, 3, 9, 17, 29, 51, 59, 87, 153, 177, 261, 493, 531, 1003, 1479, 1711, 3009, 4437, 5133, 9027, 15399, 29087, 87261, 261783]

約数ペア:

[(1, 261783), (3, 87261), (9, 29087), (17, 15399), (29, 9027), (51, 5133), (59, 4437), (87, 3009), (153, 1711), (177, 1479), (261, 1003), (493, 531)]