81862389

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:259

約数の個数: 72

約数和(自身を含む): 146984760

約数和(自身を除く): 65122371

約数列:

[1, 3, 7, 9, 21, 29, 37, 49, 63, 87, 111, 147, 173, 203, 259, 261, 333, 441, 519, 609, 777, 1073, 1211, 1421, 1557, 1813, 1827, 2331, 3219, 3633, 4263, 5017, 5439, 6401, 7511, 8477, 9657, 10899, 12789, 15051, 16317, 19203, 22533, 25431, 35119, 44807, 45153, 52577, 57609, 67599, 76293, 105357, 134421, 157731, 185629, 245833, 313649, 316071, 403263, 473193, 556887, 737499, 940947, 1299403, 1670661, 2212497, 2822841, 3898209, 9095821, 11694627, 27287463, 81862389]

約数ペア:

[(1, 81862389), (3, 27287463), (7, 11694627), (9, 9095821), (21, 3898209), (29, 2822841), (37, 2212497), (49, 1670661), (63, 1299403), (87, 940947), (111, 737499), (147, 556887), (173, 473193), (203, 403263), (259, 316071), (261, 313649), (333, 245833), (441, 185629), (519, 157731), (609, 134421), (777, 105357), (1073, 76293), (1211, 67599), (1421, 57609), (1557, 52577), (1813, 45153), (1827, 44807), (2331, 35119), (3219, 25431), (3633, 22533), (4263, 19203), (5017, 16317), (5439, 15051), (6401, 12789), (7511, 10899), (8477, 9657)]