80188900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{271}}^1$

素因数の和:565

約数の個数: 72

約数和(自身を含む): 191237760

約数和(自身を除く): 111048860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 269, 271, 275, 538, 542, 550, 1076, 1084, 1100, 1345, 1355, 2690, 2710, 2959, 2981, 5380, 5420, 5918, 5962, 6725, 6775, 11836, 11924, 13450, 13550, 14795, 14905, 26900, 27100, 29590, 29810, 59180, 59620, 72899, 73975, 74525, 145798, 147950, 149050, 291596, 295900, 298100, 364495, 728990, 801889, 1457980, 1603778, 1822475, 3207556, 3644950, 4009445, 7289900, 8018890, 16037780, 20047225, 40094450, 80188900]

約数ペア:

[(1, 80188900), (2, 40094450), (4, 20047225), (5, 16037780), (10, 8018890), (11, 7289900), (20, 4009445), (22, 3644950), (25, 3207556), (44, 1822475), (50, 1603778), (55, 1457980), (100, 801889), (110, 728990), (220, 364495), (269, 298100), (271, 295900), (275, 291596), (538, 149050), (542, 147950), (550, 145798), (1076, 74525), (1084, 73975), (1100, 72899), (1345, 59620), (1355, 59180), (2690, 29810), (2710, 29590), (2959, 27100), (2981, 26900), (5380, 14905), (5420, 14795), (5918, 13550), (5962, 13450), (6725, 11924), (6775, 11836)]