40328960

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{643}}^1$

素因数の和:678

約数の個数: 108

約数和(自身を含む): 112546728

約数和(自身を除く): 72217768

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 490, 560, 640, 643, 784, 896, 980, 1120, 1280, 1286, 1568, 1792, 1960, 2240, 2572, 3136, 3215, 3920, 4480, 4501, 5144, 6272, 6430, 7840, 8960, 9002, 10288, 12544, 12860, 15680, 18004, 20576, 22505, 25720, 31360, 31507, 36008, 41152, 45010, 51440, 62720, 63014, 72016, 82304, 90020, 102880, 126028, 144032, 157535, 164608, 180040, 205760, 252056, 288064, 315070, 360080, 411520, 504112, 576128, 630140, 720160, 823040, 1008224, 1152256, 1260280, 1440320, 2016448, 2520560, 2880640, 4032896, 5041120, 5761280, 8065792, 10082240, 20164480, 40328960]

約数ペア:

[(1, 40328960), (2, 20164480), (4, 10082240), (5, 8065792), (7, 5761280), (8, 5041120), (10, 4032896), (14, 2880640), (16, 2520560), (20, 2016448), (28, 1440320), (32, 1260280), (35, 1152256), (40, 1008224), (49, 823040), (56, 720160), (64, 630140), (70, 576128), (80, 504112), (98, 411520), (112, 360080), (128, 315070), (140, 288064), (160, 252056), (196, 205760), (224, 180040), (245, 164608), (256, 157535), (280, 144032), (320, 126028), (392, 102880), (448, 90020), (490, 82304), (560, 72016), (640, 63014), (643, 62720), (784, 51440), (896, 45010), (980, 41152), (1120, 36008), (1280, 31507), (1286, 31360), (1568, 25720), (1792, 22505), (1960, 20576), (2240, 18004), (2572, 15680), (3136, 12860), (3215, 12544), (3920, 10288), (4480, 9002), (4501, 8960), (5144, 7840), (6272, 6430)]