123921280

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:364

約数の個数: 128

約数和(自身を含む): 342720000

約数和(自身を除く): 218798720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 139, 140, 160, 199, 224, 278, 280, 320, 398, 448, 556, 560, 640, 695, 796, 896, 973, 995, 1112, 1120, 1390, 1393, 1592, 1946, 1990, 2224, 2240, 2780, 2786, 3184, 3892, 3980, 4448, 4480, 4865, 5560, 5572, 6368, 6965, 7784, 7960, 8896, 9730, 11120, 11144, 12736, 13930, 15568, 15920, 17792, 19460, 22240, 22288, 25472, 27661, 27860, 31136, 31840, 38920, 44480, 44576, 55322, 55720, 62272, 63680, 77840, 88960, 89152, 110644, 111440, 124544, 127360, 138305, 155680, 178304, 193627, 221288, 222880, 276610, 311360, 387254, 442576, 445760, 553220, 622720, 774508, 885152, 891520, 968135, 1106440, 1549016, 1770304, 1936270, 2212880, 3098032, 3540608, 3872540, 4425760, 6196064, 7745080, 8851520, 12392128, 15490160, 17703040, 24784256, 30980320, 61960640, 123921280]

約数ペア:

[(1, 123921280), (2, 61960640), (4, 30980320), (5, 24784256), (7, 17703040), (8, 15490160), (10, 12392128), (14, 8851520), (16, 7745080), (20, 6196064), (28, 4425760), (32, 3872540), (35, 3540608), (40, 3098032), (56, 2212880), (64, 1936270), (70, 1770304), (80, 1549016), (112, 1106440), (128, 968135), (139, 891520), (140, 885152), (160, 774508), (199, 622720), (224, 553220), (278, 445760), (280, 442576), (320, 387254), (398, 311360), (448, 276610), (556, 222880), (560, 221288), (640, 193627), (695, 178304), (796, 155680), (896, 138305), (973, 127360), (995, 124544), (1112, 111440), (1120, 110644), (1390, 89152), (1393, 88960), (1592, 77840), (1946, 63680), (1990, 62272), (2224, 55720), (2240, 55322), (2780, 44576), (2786, 44480), (3184, 38920), (3892, 31840), (3980, 31136), (4448, 27860), (4480, 27661), (4865, 25472), (5560, 22288), (5572, 22240), (6368, 19460), (6965, 17792), (7784, 15920), (7960, 15568), (8896, 13930), (9730, 12736), (11120, 11144)]