81654128

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{947}}^1$

素因数の和:1289

約数の個数: 40

約数和(自身を含む): 168216912

約数和(自身を除く): 86562784

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 317, 634, 947, 1268, 1894, 2536, 3788, 5072, 5389, 7576, 10778, 15152, 16099, 21556, 32198, 43112, 64396, 86224, 128792, 257584, 300199, 600398, 1200796, 2401592, 4803184, 5103383, 10206766, 20413532, 40827064, 81654128]

約数ペア:

[(1, 81654128), (2, 40827064), (4, 20413532), (8, 10206766), (16, 5103383), (17, 4803184), (34, 2401592), (68, 1200796), (136, 600398), (272, 300199), (317, 257584), (634, 128792), (947, 86224), (1268, 64396), (1894, 43112), (2536, 32198), (3788, 21556), (5072, 16099), (5389, 15152), (7576, 10778)]