21554775

素因数分解:

$3^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{2903}}^1$

素因数の和:2933

約数の個数: 48

約数和(自身を含む): 43211520

約数和(自身を除く): 21656745

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 99, 135, 165, 225, 275, 297, 495, 675, 825, 1485, 2475, 2903, 7425, 8709, 14515, 26127, 31933, 43545, 72575, 78381, 95799, 130635, 159665, 217725, 287397, 391905, 478995, 653175, 798325, 862191, 1436985, 1959525, 2394975, 4310955, 7184925, 21554775]

約数ペア:

[(1, 21554775), (3, 7184925), (5, 4310955), (9, 2394975), (11, 1959525), (15, 1436985), (25, 862191), (27, 798325), (33, 653175), (45, 478995), (55, 391905), (75, 287397), (99, 217725), (135, 159665), (165, 130635), (225, 95799), (275, 78381), (297, 72575), (495, 43545), (675, 31933), (825, 26127), (1485, 14515), (2475, 8709), (2903, 7425)]