21247875

素因数分解:

$3^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1$

素因数の和:150

約数の個数: 96

約数和(自身を含む): 44680896

約数和(自身を除く): 23433021

約数列:

[1, 3, 5, 9, 11, 15, 17, 25, 33, 45, 51, 55, 75, 85, 99, 101, 125, 153, 165, 187, 225, 255, 275, 303, 375, 425, 495, 505, 561, 765, 825, 909, 935, 1111, 1125, 1275, 1375, 1515, 1683, 1717, 2125, 2475, 2525, 2805, 3333, 3825, 4125, 4545, 4675, 5151, 5555, 6375, 7575, 8415, 8585, 9999, 12375, 12625, 14025, 15453, 16665, 18887, 19125, 22725, 23375, 25755, 27775, 37875, 42075, 42925, 49995, 56661, 70125, 77265, 83325, 94435, 113625, 128775, 138875, 169983, 210375, 214625, 249975, 283305, 386325, 416625, 472175, 643875, 849915, 1249875, 1416525, 1931625, 2360875, 4249575, 7082625, 21247875]

約数ペア:

[(1, 21247875), (3, 7082625), (5, 4249575), (9, 2360875), (11, 1931625), (15, 1416525), (17, 1249875), (25, 849915), (33, 643875), (45, 472175), (51, 416625), (55, 386325), (75, 283305), (85, 249975), (99, 214625), (101, 210375), (125, 169983), (153, 138875), (165, 128775), (187, 113625), (225, 94435), (255, 83325), (275, 77265), (303, 70125), (375, 56661), (425, 49995), (495, 42925), (505, 42075), (561, 37875), (765, 27775), (825, 25755), (909, 23375), (935, 22725), (1111, 19125), (1125, 18887), (1275, 16665), (1375, 15453), (1515, 14025), (1683, 12625), (1717, 12375), (2125, 9999), (2475, 8585), (2525, 8415), (2805, 7575), (3333, 6375), (3825, 5555), (4125, 5151), (4545, 4675)]