251715519

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:290

約数の個数: 80

約数和(自身を含む): 436575744

約数和(自身を除く): 184860225

約数列:

[1, 3, 9, 11, 23, 27, 33, 69, 71, 81, 99, 173, 207, 213, 253, 297, 519, 621, 639, 759, 781, 891, 1557, 1633, 1863, 1903, 1917, 2277, 2343, 3979, 4671, 4899, 5709, 5751, 6831, 7029, 11937, 12283, 14013, 14697, 17127, 17963, 20493, 21087, 35811, 36849, 43769, 44091, 51381, 53889, 63261, 107433, 110547, 131307, 132273, 135113, 154143, 161667, 282509, 322299, 331641, 393921, 405339, 485001, 847527, 994923, 1181763, 1216017, 1455003, 2542581, 3107599, 3545289, 3648051, 7627743, 9322797, 10944153, 22883229, 27968391, 83905173, 251715519]

約数ペア:

[(1, 251715519), (3, 83905173), (9, 27968391), (11, 22883229), (23, 10944153), (27, 9322797), (33, 7627743), (69, 3648051), (71, 3545289), (81, 3107599), (99, 2542581), (173, 1455003), (207, 1216017), (213, 1181763), (253, 994923), (297, 847527), (519, 485001), (621, 405339), (639, 393921), (759, 331641), (781, 322299), (891, 282509), (1557, 161667), (1633, 154143), (1863, 135113), (1903, 132273), (1917, 131307), (2277, 110547), (2343, 107433), (3979, 63261), (4671, 53889), (4899, 51381), (5709, 44091), (5751, 43769), (6831, 36849), (7029, 35811), (11937, 21087), (12283, 20493), (14013, 17963), (14697, 17127)]