20818772

素因数分解:

$2^2\times {\mathrm{13}}^3\times {\mathrm{23}}^1\times {\mathrm{103}}^1$

素因数の和:169

約数の個数: 48

約数和(自身を含む): 41583360

約数和(自身を除く): 20764588

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 92, 103, 169, 206, 299, 338, 412, 598, 676, 1196, 1339, 2197, 2369, 2678, 3887, 4394, 4738, 5356, 7774, 8788, 9476, 15548, 17407, 30797, 34814, 50531, 61594, 69628, 101062, 123188, 202124, 226291, 400361, 452582, 800722, 905164, 1601444, 5204693, 10409386, 20818772]

約数ペア:

[(1, 20818772), (2, 10409386), (4, 5204693), (13, 1601444), (23, 905164), (26, 800722), (46, 452582), (52, 400361), (92, 226291), (103, 202124), (169, 123188), (206, 101062), (299, 69628), (338, 61594), (412, 50531), (598, 34814), (676, 30797), (1196, 17407), (1339, 15548), (2197, 9476), (2369, 8788), (2678, 7774), (3887, 5356), (4394, 4738)]