20984054

素因数分解:

$2^1\times 7^3\times {\mathrm{13}}^2\times {\mathrm{181}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 39967200

約数和(自身を除く): 18983146

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 169, 181, 182, 338, 343, 362, 637, 686, 1183, 1267, 1274, 2353, 2366, 2534, 4459, 4706, 8281, 8869, 8918, 16471, 16562, 17738, 30589, 32942, 57967, 61178, 62083, 115297, 115934, 124166, 214123, 230594, 428246, 807079, 1498861, 1614158, 2997722, 10492027, 20984054]

約数ペア:

[(1, 20984054), (2, 10492027), (7, 2997722), (13, 1614158), (14, 1498861), (26, 807079), (49, 428246), (91, 230594), (98, 214123), (169, 124166), (181, 115934), (182, 115297), (338, 62083), (343, 61178), (362, 57967), (637, 32942), (686, 30589), (1183, 17738), (1267, 16562), (1274, 16471), (2353, 8918), (2366, 8869), (2534, 8281), (4459, 4706)]