20602868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{199}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 42806400

約数和(自身を除く): 22203532

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 181, 199, 286, 362, 398, 572, 724, 796, 1991, 2189, 2353, 2587, 3982, 4378, 4706, 5174, 7964, 8756, 9412, 10348, 25883, 28457, 36019, 51766, 56914, 72038, 103532, 113828, 144076, 396209, 468247, 792418, 936494, 1584836, 1872988, 5150717, 10301434, 20602868]

約数ペア:

[(1, 20602868), (2, 10301434), (4, 5150717), (11, 1872988), (13, 1584836), (22, 936494), (26, 792418), (44, 468247), (52, 396209), (143, 144076), (181, 113828), (199, 103532), (286, 72038), (362, 56914), (398, 51766), (572, 36019), (724, 28457), (796, 25883), (1991, 10348), (2189, 9412), (2353, 8756), (2587, 7964), (3982, 5174), (4378, 4706)]