207399231

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{227}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 352396800

約数和(自身を除く): 144997569

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 117, 137, 171, 227, 247, 351, 411, 513, 681, 741, 1233, 1781, 2043, 2223, 2603, 2951, 3699, 4313, 5343, 6129, 6669, 7809, 8853, 12939, 16029, 23427, 26559, 31099, 33839, 38817, 48087, 56069, 70281, 79677, 93297, 101517, 116451, 168207, 279891, 304551, 404287, 504621, 590881, 839673, 913653, 1212861, 1513863, 1772643, 3638583, 5317929, 7681453, 10915749, 15953787, 23044359, 69133077, 207399231]

約数ペア:

[(1, 207399231), (3, 69133077), (9, 23044359), (13, 15953787), (19, 10915749), (27, 7681453), (39, 5317929), (57, 3638583), (117, 1772643), (137, 1513863), (171, 1212861), (227, 913653), (247, 839673), (351, 590881), (411, 504621), (513, 404287), (681, 304551), (741, 279891), (1233, 168207), (1781, 116451), (2043, 101517), (2223, 93297), (2603, 79677), (2951, 70281), (3699, 56069), (4313, 48087), (5343, 38817), (6129, 33839), (6669, 31099), (7809, 26559), (8853, 23427), (12939, 16029)]