261261

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1$

素因数の和:66

約数の個数: 48

約数和(自身を含む): 524160

約数和(自身を除く): 262899

約数列:

[1, 3, 7, 9, 11, 13, 21, 29, 33, 39, 63, 77, 87, 91, 99, 117, 143, 203, 231, 261, 273, 319, 377, 429, 609, 693, 819, 957, 1001, 1131, 1287, 1827, 2233, 2639, 2871, 3003, 3393, 4147, 6699, 7917, 9009, 12441, 20097, 23751, 29029, 37323, 87087, 261261]

約数ペア:

[(1, 261261), (3, 87087), (7, 37323), (9, 29029), (11, 23751), (13, 20097), (21, 12441), (29, 9009), (33, 7917), (39, 6699), (63, 4147), (77, 3393), (87, 3003), (91, 2871), (99, 2639), (117, 2233), (143, 1827), (203, 1287), (231, 1131), (261, 1001), (273, 957), (319, 819), (377, 693), (429, 609)]