82245520

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{20981}}^1$

素因数の和:21008

約数の個数: 60

約数和(自身を含む): 222451164

約数和(自身を除く): 140205644

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 20981, 41962, 83924, 104905, 146867, 167848, 209810, 293734, 335696, 419620, 587468, 734335, 839240, 1028069, 1174936, 1468670, 1678480, 2056138, 2349872, 2937340, 4112276, 5140345, 5874680, 8224552, 10280690, 11749360, 16449104, 20561380, 41122760, 82245520]

約数ペア:

[(1, 82245520), (2, 41122760), (4, 20561380), (5, 16449104), (7, 11749360), (8, 10280690), (10, 8224552), (14, 5874680), (16, 5140345), (20, 4112276), (28, 2937340), (35, 2349872), (40, 2056138), (49, 1678480), (56, 1468670), (70, 1174936), (80, 1028069), (98, 839240), (112, 734335), (140, 587468), (196, 419620), (245, 335696), (280, 293734), (392, 209810), (490, 167848), (560, 146867), (784, 104905), (980, 83924), (1960, 41962), (3920, 20981)]