28133325

素因数分解:

$3^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{421}}^1$

素因数の和:457

約数の個数: 72

約数和(自身を含む): 57142176

約数和(自身を除く): 29008851

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 81, 99, 135, 165, 225, 243, 275, 297, 405, 421, 495, 675, 825, 891, 1215, 1263, 1485, 2025, 2105, 2475, 2673, 3789, 4455, 4631, 6075, 6315, 7425, 10525, 11367, 13365, 13893, 18945, 22275, 23155, 31575, 34101, 41679, 56835, 66825, 69465, 94725, 102303, 115775, 125037, 170505, 208395, 284175, 347325, 375111, 511515, 625185, 852525, 1041975, 1125333, 1875555, 2557575, 3125925, 5626665, 9377775, 28133325]

約数ペア:

[(1, 28133325), (3, 9377775), (5, 5626665), (9, 3125925), (11, 2557575), (15, 1875555), (25, 1125333), (27, 1041975), (33, 852525), (45, 625185), (55, 511515), (75, 375111), (81, 347325), (99, 284175), (135, 208395), (165, 170505), (225, 125037), (243, 115775), (275, 102303), (297, 94725), (405, 69465), (421, 66825), (495, 56835), (675, 41679), (825, 34101), (891, 31575), (1215, 23155), (1263, 22275), (1485, 18945), (2025, 13893), (2105, 13365), (2475, 11367), (2673, 10525), (3789, 7425), (4455, 6315), (4631, 6075)]