78480640

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{461}}^1$

素因数の和:508

約数の個数: 144

約数和(自身を含む): 226638720

約数和(自身を除く): 148158080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 112, 128, 133, 140, 152, 160, 190, 224, 256, 266, 280, 304, 320, 380, 448, 461, 532, 560, 608, 640, 665, 760, 896, 922, 1064, 1120, 1216, 1280, 1330, 1520, 1792, 1844, 2128, 2240, 2305, 2432, 2660, 3040, 3227, 3688, 4256, 4480, 4610, 4864, 5320, 6080, 6454, 7376, 8512, 8759, 8960, 9220, 10640, 12160, 12908, 14752, 16135, 17024, 17518, 18440, 21280, 24320, 25816, 29504, 32270, 34048, 35036, 36880, 42560, 43795, 51632, 59008, 61313, 64540, 70072, 73760, 85120, 87590, 103264, 118016, 122626, 129080, 140144, 147520, 170240, 175180, 206528, 245252, 258160, 280288, 295040, 306565, 350360, 413056, 490504, 516320, 560576, 590080, 613130, 700720, 826112, 981008, 1032640, 1121152, 1226260, 1401440, 1962016, 2065280, 2242304, 2452520, 2802880, 3924032, 4130560, 4905040, 5605760, 7848064, 9810080, 11211520, 15696128, 19620160, 39240320, 78480640]

約数ペア:

[(1, 78480640), (2, 39240320), (4, 19620160), (5, 15696128), (7, 11211520), (8, 9810080), (10, 7848064), (14, 5605760), (16, 4905040), (19, 4130560), (20, 3924032), (28, 2802880), (32, 2452520), (35, 2242304), (38, 2065280), (40, 1962016), (56, 1401440), (64, 1226260), (70, 1121152), (76, 1032640), (80, 981008), (95, 826112), (112, 700720), (128, 613130), (133, 590080), (140, 560576), (152, 516320), (160, 490504), (190, 413056), (224, 350360), (256, 306565), (266, 295040), (280, 280288), (304, 258160), (320, 245252), (380, 206528), (448, 175180), (461, 170240), (532, 147520), (560, 140144), (608, 129080), (640, 122626), (665, 118016), (760, 103264), (896, 87590), (922, 85120), (1064, 73760), (1120, 70072), (1216, 64540), (1280, 61313), (1330, 59008), (1520, 51632), (1792, 43795), (1844, 42560), (2128, 36880), (2240, 35036), (2305, 34048), (2432, 32270), (2660, 29504), (3040, 25816), (3227, 24320), (3688, 21280), (4256, 18440), (4480, 17518), (4610, 17024), (4864, 16135), (5320, 14752), (6080, 12908), (6454, 12160), (7376, 10640), (8512, 9220), (8759, 8960)]