28856421

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{29}}^1$

素因数の和:111

約数の個数: 72

約数和(自身を含む): 51760800

約数和(自身を除く): 22904379

約数列:

[1, 3, 9, 11, 19, 23, 29, 33, 57, 69, 87, 99, 171, 207, 209, 253, 261, 319, 437, 529, 551, 627, 667, 759, 957, 1311, 1587, 1653, 1881, 2001, 2277, 2871, 3933, 4761, 4807, 4959, 5819, 6003, 6061, 7337, 10051, 12673, 14421, 15341, 17457, 18183, 22011, 30153, 38019, 43263, 46023, 52371, 54549, 66033, 90459, 110561, 114057, 138069, 139403, 168751, 291479, 331683, 418209, 506253, 874437, 995049, 1254627, 1518759, 2623311, 3206269, 9618807, 28856421]

約数ペア:

[(1, 28856421), (3, 9618807), (9, 3206269), (11, 2623311), (19, 1518759), (23, 1254627), (29, 995049), (33, 874437), (57, 506253), (69, 418209), (87, 331683), (99, 291479), (171, 168751), (207, 139403), (209, 138069), (253, 114057), (261, 110561), (319, 90459), (437, 66033), (529, 54549), (551, 52371), (627, 46023), (667, 43263), (759, 38019), (957, 30153), (1311, 22011), (1587, 18183), (1653, 17457), (1881, 15341), (2001, 14421), (2277, 12673), (2871, 10051), (3933, 7337), (4761, 6061), (4807, 6003), (4959, 5819)]