81997300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{463}}^1$

素因数の和:518

約数の個数: 144

約数和(自身を含む): 231985152

約数和(自身を除く): 149987852

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 23, 25, 28, 35, 44, 46, 50, 55, 70, 77, 92, 100, 110, 115, 140, 154, 161, 175, 220, 230, 253, 275, 308, 322, 350, 385, 460, 463, 506, 550, 575, 644, 700, 770, 805, 926, 1012, 1100, 1150, 1265, 1540, 1610, 1771, 1852, 1925, 2300, 2315, 2530, 3220, 3241, 3542, 3850, 4025, 4630, 5060, 5093, 6325, 6482, 7084, 7700, 8050, 8855, 9260, 10186, 10649, 11575, 12650, 12964, 16100, 16205, 17710, 20372, 21298, 23150, 25300, 25465, 32410, 35420, 35651, 42596, 44275, 46300, 50930, 53245, 64820, 71302, 74543, 81025, 88550, 101860, 106490, 117139, 127325, 142604, 149086, 162050, 177100, 178255, 212980, 234278, 254650, 266225, 298172, 324100, 356510, 372715, 468556, 509300, 532450, 585695, 713020, 745430, 819973, 891275, 1064900, 1171390, 1490860, 1639946, 1782550, 1863575, 2342780, 2928475, 3279892, 3565100, 3727150, 4099865, 5856950, 7454300, 8199730, 11713900, 16399460, 20499325, 40998650, 81997300]

約数ペア:

[(1, 81997300), (2, 40998650), (4, 20499325), (5, 16399460), (7, 11713900), (10, 8199730), (11, 7454300), (14, 5856950), (20, 4099865), (22, 3727150), (23, 3565100), (25, 3279892), (28, 2928475), (35, 2342780), (44, 1863575), (46, 1782550), (50, 1639946), (55, 1490860), (70, 1171390), (77, 1064900), (92, 891275), (100, 819973), (110, 745430), (115, 713020), (140, 585695), (154, 532450), (161, 509300), (175, 468556), (220, 372715), (230, 356510), (253, 324100), (275, 298172), (308, 266225), (322, 254650), (350, 234278), (385, 212980), (460, 178255), (463, 177100), (506, 162050), (550, 149086), (575, 142604), (644, 127325), (700, 117139), (770, 106490), (805, 101860), (926, 88550), (1012, 81025), (1100, 74543), (1150, 71302), (1265, 64820), (1540, 53245), (1610, 50930), (1771, 46300), (1852, 44275), (1925, 42596), (2300, 35651), (2315, 35420), (2530, 32410), (3220, 25465), (3241, 25300), (3542, 23150), (3850, 21298), (4025, 20372), (4630, 17710), (5060, 16205), (5093, 16100), (6325, 12964), (6482, 12650), (7084, 11575), (7700, 10649), (8050, 10186), (8855, 9260)]