81767720

素因数分解:

$2^3\times 5^1\times {\mathrm{433}}^1\times {\mathrm{4721}}^1$

素因数の和:5165

約数の個数: 32

約数和(自身を含む): 184441320

約数和(自身を除く): 102673600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 433, 866, 1732, 2165, 3464, 4330, 4721, 8660, 9442, 17320, 18884, 23605, 37768, 47210, 94420, 188840, 2044193, 4088386, 8176772, 10220965, 16353544, 20441930, 40883860, 81767720]

約数ペア:

[(1, 81767720), (2, 40883860), (4, 20441930), (5, 16353544), (8, 10220965), (10, 8176772), (20, 4088386), (40, 2044193), (433, 188840), (866, 94420), (1732, 47210), (2165, 37768), (3464, 23605), (4330, 18884), (4721, 17320), (8660, 9442)]