20247975

素因数分解:

$3^6\times 5^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1$

素因数の和:140

約数の個数: 84

約数和(自身を含む): 41472792

約数和(自身を除く): 21224817

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 81, 99, 101, 135, 165, 225, 243, 275, 297, 303, 405, 495, 505, 675, 729, 825, 891, 909, 1111, 1215, 1485, 1515, 2025, 2475, 2525, 2673, 2727, 3333, 3645, 4455, 4545, 5555, 6075, 7425, 7575, 8019, 8181, 9999, 13365, 13635, 16665, 18225, 22275, 22725, 24543, 27775, 29997, 40095, 40905, 49995, 66825, 68175, 73629, 83325, 89991, 122715, 149985, 200475, 204525, 249975, 269973, 368145, 449955, 613575, 749925, 809919, 1349865, 1840725, 2249775, 4049595, 6749325, 20247975]

約数ペア:

[(1, 20247975), (3, 6749325), (5, 4049595), (9, 2249775), (11, 1840725), (15, 1349865), (25, 809919), (27, 749925), (33, 613575), (45, 449955), (55, 368145), (75, 269973), (81, 249975), (99, 204525), (101, 200475), (135, 149985), (165, 122715), (225, 89991), (243, 83325), (275, 73629), (297, 68175), (303, 66825), (405, 49995), (495, 40905), (505, 40095), (675, 29997), (729, 27775), (825, 24543), (891, 22725), (909, 22275), (1111, 18225), (1215, 16665), (1485, 13635), (1515, 13365), (2025, 9999), (2475, 8181), (2525, 8019), (2673, 7575), (2727, 7425), (3333, 6075), (3645, 5555), (4455, 4545)]