19966928

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{9109}}^1$

素因数の和:9254

約数の個数: 20

約数和(自身を含む): 38972580

約数和(自身を除く): 19005652

約数列:

[1, 2, 4, 8, 16, 137, 274, 548, 1096, 2192, 9109, 18218, 36436, 72872, 145744, 1247933, 2495866, 4991732, 9983464, 19966928]

約数ペア:

[(1, 19966928), (2, 9983464), (4, 4991732), (8, 2495866), (16, 1247933), (137, 145744), (274, 72872), (548, 36436), (1096, 18218), (2192, 9109)]