261213381

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{11939}}^1$

素因数の和:11986

約数の個数: 48

約数和(自身を含む): 469385280

約数和(自身を除く): 208171899

約数列:

[1, 3, 9, 11, 13, 17, 33, 39, 51, 99, 117, 143, 153, 187, 221, 429, 561, 663, 1287, 1683, 1989, 2431, 7293, 11939, 21879, 35817, 107451, 131329, 155207, 202963, 393987, 465621, 608889, 1181961, 1396863, 1707277, 1826667, 2232593, 2638519, 5121831, 6697779, 7915557, 15365493, 20093337, 23746671, 29023709, 87071127, 261213381]

約数ペア:

[(1, 261213381), (3, 87071127), (9, 29023709), (11, 23746671), (13, 20093337), (17, 15365493), (33, 7915557), (39, 6697779), (51, 5121831), (99, 2638519), (117, 2232593), (143, 1826667), (153, 1707277), (187, 1396863), (221, 1181961), (429, 608889), (561, 465621), (663, 393987), (1287, 202963), (1683, 155207), (1989, 131329), (2431, 107451), (7293, 35817), (11939, 21879)]