21168208

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{16747}}^1$

素因数の和:16834

約数の個数: 20

約数和(自身を含む): 41535040

約数和(自身を除く): 20366832

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 16747, 33494, 66988, 133976, 267952, 1323013, 2646026, 5292052, 10584104, 21168208]

約数ペア:

[(1, 21168208), (2, 10584104), (4, 5292052), (8, 2646026), (16, 1323013), (79, 267952), (158, 133976), (316, 66988), (632, 33494), (1264, 16747)]