638893494

素因数分解:

$2^1\times 3^4\times {\mathrm{23}}^1\times {\mathrm{171469}}^1$

素因数の和:171506

約数の個数: 40

約数和(自身を含む): 1493846640

約数和(自身を除く): 854953146

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 81, 138, 162, 207, 414, 621, 1242, 1863, 3726, 171469, 342938, 514407, 1028814, 1543221, 3086442, 3943787, 4629663, 7887574, 9259326, 11831361, 13888989, 23662722, 27777978, 35494083, 70988166, 106482249, 212964498, 319446747, 638893494]

約数ペア:

[(1, 638893494), (2, 319446747), (3, 212964498), (6, 106482249), (9, 70988166), (18, 35494083), (23, 27777978), (27, 23662722), (46, 13888989), (54, 11831361), (69, 9259326), (81, 7887574), (138, 4629663), (162, 3943787), (207, 3086442), (414, 1543221), (621, 1028814), (1242, 514407), (1863, 342938), (3726, 171469)]