21098637

素因数分解:

$3^4\times 7^1\times {\mathrm{127}}^1\times {\mathrm{293}}^1$

素因数の和:439

約数の個数: 40

約数和(自身を含む): 36427776

約数和(自身を除く): 15329139

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 127, 189, 293, 381, 567, 879, 889, 1143, 2051, 2637, 2667, 3429, 6153, 7911, 8001, 10287, 18459, 23733, 24003, 37211, 55377, 72009, 111633, 166131, 260477, 334899, 781431, 1004697, 2344293, 3014091, 7032879, 21098637]

約数ペア:

[(1, 21098637), (3, 7032879), (7, 3014091), (9, 2344293), (21, 1004697), (27, 781431), (63, 334899), (81, 260477), (127, 166131), (189, 111633), (293, 72009), (381, 55377), (567, 37211), (879, 24003), (889, 23733), (1143, 18459), (2051, 10287), (2637, 8001), (2667, 7911), (3429, 6153)]