20402276

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:312

約数の個数: 36

約数和(自身を含む): 38404800

約数和(自身を除く): 18002524

約数列:

[1, 2, 4, 19, 38, 71, 76, 142, 199, 284, 361, 398, 722, 796, 1349, 1444, 2698, 3781, 5396, 7562, 14129, 15124, 25631, 28258, 51262, 56516, 71839, 102524, 143678, 268451, 287356, 536902, 1073804, 5100569, 10201138, 20402276]

約数ペア:

[(1, 20402276), (2, 10201138), (4, 5100569), (19, 1073804), (38, 536902), (71, 287356), (76, 268451), (142, 143678), (199, 102524), (284, 71839), (361, 56516), (398, 51262), (722, 28258), (796, 25631), (1349, 15124), (1444, 14129), (2698, 7562), (3781, 5396)]