81231768

素因数分解:

$2^3\times 3^3\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1$

素因数の和:318

約数の個数: 128

約数和(自身を含む): 239500800

約数和(自身を除く): 158269032

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 23, 24, 27, 36, 46, 54, 69, 72, 83, 92, 108, 138, 166, 184, 197, 207, 216, 249, 276, 332, 394, 414, 498, 552, 591, 621, 664, 747, 788, 828, 996, 1182, 1242, 1494, 1576, 1656, 1773, 1909, 1992, 2241, 2364, 2484, 2988, 3546, 3818, 4482, 4531, 4728, 4968, 5319, 5727, 5976, 7092, 7636, 8964, 9062, 10638, 11454, 13593, 14184, 15272, 16351, 17181, 17928, 18124, 21276, 22908, 27186, 32702, 34362, 36248, 40779, 42552, 45816, 49053, 51543, 54372, 65404, 68724, 81558, 98106, 103086, 108744, 122337, 130808, 137448, 147159, 163116, 196212, 206172, 244674, 294318, 326232, 376073, 392424, 412344, 441477, 489348, 588636, 752146, 882954, 978696, 1128219, 1177272, 1504292, 1765908, 2256438, 3008584, 3384657, 3531816, 4512876, 6769314, 9025752, 10153971, 13538628, 20307942, 27077256, 40615884, 81231768]

約数ペア:

[(1, 81231768), (2, 40615884), (3, 27077256), (4, 20307942), (6, 13538628), (8, 10153971), (9, 9025752), (12, 6769314), (18, 4512876), (23, 3531816), (24, 3384657), (27, 3008584), (36, 2256438), (46, 1765908), (54, 1504292), (69, 1177272), (72, 1128219), (83, 978696), (92, 882954), (108, 752146), (138, 588636), (166, 489348), (184, 441477), (197, 412344), (207, 392424), (216, 376073), (249, 326232), (276, 294318), (332, 244674), (394, 206172), (414, 196212), (498, 163116), (552, 147159), (591, 137448), (621, 130808), (664, 122337), (747, 108744), (788, 103086), (828, 98106), (996, 81558), (1182, 68724), (1242, 65404), (1494, 54372), (1576, 51543), (1656, 49053), (1773, 45816), (1909, 42552), (1992, 40779), (2241, 36248), (2364, 34362), (2484, 32702), (2988, 27186), (3546, 22908), (3818, 21276), (4482, 18124), (4531, 17928), (4728, 17181), (4968, 16351), (5319, 15272), (5727, 14184), (5976, 13593), (7092, 11454), (7636, 10638), (8964, 9062)]