21194649

素因数分解:

$3^3\times 7^1\times {\mathrm{127}}^1\times {\mathrm{883}}^1$

素因数の和:1026

約数の個数: 32

約数和(自身を含む): 36208640

約数和(自身を除く): 15013991

約数列:

[1, 3, 7, 9, 21, 27, 63, 127, 189, 381, 883, 889, 1143, 2649, 2667, 3429, 6181, 7947, 8001, 18543, 23841, 24003, 55629, 112141, 166887, 336423, 784987, 1009269, 2354961, 3027807, 7064883, 21194649]

約数ペア:

[(1, 21194649), (3, 7064883), (7, 3027807), (9, 2354961), (21, 1009269), (27, 784987), (63, 336423), (127, 166887), (189, 112141), (381, 55629), (883, 24003), (889, 23841), (1143, 18543), (2649, 8001), (2667, 7947), (3429, 6181)]