20445579

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{181}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 37250304

約数和(自身を除く): 16804725

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 163, 181, 231, 489, 543, 693, 1141, 1267, 1467, 1629, 1793, 1991, 3423, 3801, 5379, 5973, 10269, 11403, 12551, 13937, 16137, 17919, 29503, 37653, 41811, 88509, 112959, 125433, 206521, 265527, 324533, 619563, 973599, 1858689, 2271731, 2920797, 6815193, 20445579]

約数ペア:

[(1, 20445579), (3, 6815193), (7, 2920797), (9, 2271731), (11, 1858689), (21, 973599), (33, 619563), (63, 324533), (77, 265527), (99, 206521), (163, 125433), (181, 112959), (231, 88509), (489, 41811), (543, 37653), (693, 29503), (1141, 17919), (1267, 16137), (1467, 13937), (1629, 12551), (1793, 11403), (1991, 10269), (3423, 5973), (3801, 5379)]