161315840

素因数分解:

$2^{10}\times 5^1\times 7^2\times {\mathrm{643}}^1$

素因数の和:682

約数の個数: 132

約数和(自身を含む): 450847656

約数和(自身を除く): 289531816

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, 512, 560, 640, 643, 784, 896, 980, 1024, 1120, 1280, 1286, 1568, 1792, 1960, 2240, 2560, 2572, 3136, 3215, 3584, 3920, 4480, 4501, 5120, 5144, 6272, 6430, 7168, 7840, 8960, 9002, 10288, 12544, 12860, 15680, 17920, 18004, 20576, 22505, 25088, 25720, 31360, 31507, 35840, 36008, 41152, 45010, 50176, 51440, 62720, 63014, 72016, 82304, 90020, 102880, 125440, 126028, 144032, 157535, 164608, 180040, 205760, 250880, 252056, 288064, 315070, 329216, 360080, 411520, 504112, 576128, 630140, 658432, 720160, 823040, 1008224, 1152256, 1260280, 1440320, 1646080, 2016448, 2304512, 2520560, 2880640, 3292160, 4032896, 4609024, 5041120, 5761280, 8065792, 10082240, 11522560, 16131584, 20164480, 23045120, 32263168, 40328960, 80657920, 161315840]

約数ペア:

[(1, 161315840), (2, 80657920), (4, 40328960), (5, 32263168), (7, 23045120), (8, 20164480), (10, 16131584), (14, 11522560), (16, 10082240), (20, 8065792), (28, 5761280), (32, 5041120), (35, 4609024), (40, 4032896), (49, 3292160), (56, 2880640), (64, 2520560), (70, 2304512), (80, 2016448), (98, 1646080), (112, 1440320), (128, 1260280), (140, 1152256), (160, 1008224), (196, 823040), (224, 720160), (245, 658432), (256, 630140), (280, 576128), (320, 504112), (392, 411520), (448, 360080), (490, 329216), (512, 315070), (560, 288064), (640, 252056), (643, 250880), (784, 205760), (896, 180040), (980, 164608), (1024, 157535), (1120, 144032), (1280, 126028), (1286, 125440), (1568, 102880), (1792, 90020), (1960, 82304), (2240, 72016), (2560, 63014), (2572, 62720), (3136, 51440), (3215, 50176), (3584, 45010), (3920, 41152), (4480, 36008), (4501, 35840), (5120, 31507), (5144, 31360), (6272, 25720), (6430, 25088), (7168, 22505), (7840, 20576), (8960, 18004), (9002, 17920), (10288, 15680), (12544, 12860)]