81315117

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:267

約数の個数: 64

約数和(自身を含む): 139104000

約数和(自身を除く): 57788883

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 89, 117, 137, 171, 247, 267, 351, 411, 513, 741, 801, 1157, 1233, 1691, 1781, 2223, 2403, 2603, 3471, 3699, 5073, 5343, 6669, 7809, 10413, 12193, 15219, 16029, 21983, 23427, 31239, 33839, 36579, 45657, 48087, 65949, 70281, 101517, 109737, 158509, 197847, 231667, 304551, 329211, 475527, 593541, 695001, 913653, 1426581, 2085003, 3011671, 4279743, 6255009, 9035013, 27105039, 81315117]

約数ペア:

[(1, 81315117), (3, 27105039), (9, 9035013), (13, 6255009), (19, 4279743), (27, 3011671), (39, 2085003), (57, 1426581), (89, 913653), (117, 695001), (137, 593541), (171, 475527), (247, 329211), (267, 304551), (351, 231667), (411, 197847), (513, 158509), (741, 109737), (801, 101517), (1157, 70281), (1233, 65949), (1691, 48087), (1781, 45657), (2223, 36579), (2403, 33839), (2603, 31239), (3471, 23427), (3699, 21983), (5073, 16029), (5343, 15219), (6669, 12193), (7809, 10413)]