20969936

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{557}}^1$

素因数の和:759

約数の個数: 40

約数和(自身を含む): 44075304

約数和(自身を除く): 23105368

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 181, 208, 362, 557, 724, 1114, 1448, 2228, 2353, 2896, 4456, 4706, 7241, 8912, 9412, 14482, 18824, 28964, 37648, 57928, 100817, 115856, 201634, 403268, 806536, 1310621, 1613072, 2621242, 5242484, 10484968, 20969936]

約数ペア:

[(1, 20969936), (2, 10484968), (4, 5242484), (8, 2621242), (13, 1613072), (16, 1310621), (26, 806536), (52, 403268), (104, 201634), (181, 115856), (208, 100817), (362, 57928), (557, 37648), (724, 28964), (1114, 18824), (1448, 14482), (2228, 9412), (2353, 8912), (2896, 7241), (4456, 4706)]