128001328

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{661}}^1$

素因数の和:715

約数の個数: 120

約数和(自身を含む): 327531120

約数和(自身を除く): 199529792

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 38, 49, 52, 56, 76, 91, 98, 104, 112, 133, 152, 182, 196, 208, 247, 266, 304, 364, 392, 494, 532, 637, 661, 728, 784, 931, 988, 1064, 1274, 1322, 1456, 1729, 1862, 1976, 2128, 2548, 2644, 3458, 3724, 3952, 4627, 5096, 5288, 6916, 7448, 8593, 9254, 10192, 10576, 12103, 12559, 13832, 14896, 17186, 18508, 24206, 25118, 27664, 32389, 34372, 37016, 48412, 50236, 60151, 64778, 68744, 74032, 87913, 96824, 100472, 120302, 129556, 137488, 163267, 175826, 193648, 200944, 240604, 259112, 326534, 351652, 421057, 481208, 518224, 615391, 653068, 703304, 842114, 962416, 1142869, 1230782, 1306136, 1406608, 1684228, 2285738, 2461564, 2612272, 3368456, 4571476, 4923128, 6736912, 8000083, 9142952, 9846256, 16000166, 18285904, 32000332, 64000664, 128001328]

約数ペア:

[(1, 128001328), (2, 64000664), (4, 32000332), (7, 18285904), (8, 16000166), (13, 9846256), (14, 9142952), (16, 8000083), (19, 6736912), (26, 4923128), (28, 4571476), (38, 3368456), (49, 2612272), (52, 2461564), (56, 2285738), (76, 1684228), (91, 1406608), (98, 1306136), (104, 1230782), (112, 1142869), (133, 962416), (152, 842114), (182, 703304), (196, 653068), (208, 615391), (247, 518224), (266, 481208), (304, 421057), (364, 351652), (392, 326534), (494, 259112), (532, 240604), (637, 200944), (661, 193648), (728, 175826), (784, 163267), (931, 137488), (988, 129556), (1064, 120302), (1274, 100472), (1322, 96824), (1456, 87913), (1729, 74032), (1862, 68744), (1976, 64778), (2128, 60151), (2548, 50236), (2644, 48412), (3458, 37016), (3724, 34372), (3952, 32389), (4627, 27664), (5096, 25118), (5288, 24206), (6916, 18508), (7448, 17186), (8593, 14896), (9254, 13832), (10192, 12559), (10576, 12103)]