18748125

素因数分解:

$3^3\times 5^4\times {\mathrm{11}}^1\times {\mathrm{101}}^1$

素因数の和:141

約数の個数: 80

約数和(自身を含む): 38237760

約数和(自身を除く): 19489635

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 99, 101, 125, 135, 165, 225, 275, 297, 303, 375, 495, 505, 625, 675, 825, 909, 1111, 1125, 1375, 1485, 1515, 1875, 2475, 2525, 2727, 3333, 3375, 4125, 4545, 5555, 5625, 6875, 7425, 7575, 9999, 12375, 12625, 13635, 16665, 16875, 20625, 22725, 27775, 29997, 37125, 37875, 49995, 61875, 63125, 68175, 83325, 113625, 138875, 149985, 185625, 189375, 249975, 340875, 416625, 568125, 694375, 749925, 1249875, 1704375, 2083125, 3749625, 6249375, 18748125]

約数ペア:

[(1, 18748125), (3, 6249375), (5, 3749625), (9, 2083125), (11, 1704375), (15, 1249875), (25, 749925), (27, 694375), (33, 568125), (45, 416625), (55, 340875), (75, 249975), (99, 189375), (101, 185625), (125, 149985), (135, 138875), (165, 113625), (225, 83325), (275, 68175), (297, 63125), (303, 61875), (375, 49995), (495, 37875), (505, 37125), (625, 29997), (675, 27775), (825, 22725), (909, 20625), (1111, 16875), (1125, 16665), (1375, 13635), (1485, 12625), (1515, 12375), (1875, 9999), (2475, 7575), (2525, 7425), (2727, 6875), (3333, 5625), (3375, 5555), (4125, 4545)]