388691320

素因数分解:

$2^3\times 5^1\times {\mathrm{2213}}^1\times {\mathrm{4391}}^1$

素因数の和:6615

約数の個数: 32

約数和(自身を含む): 875149920

約数和(自身を除く): 486458600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2213, 4391, 4426, 8782, 8852, 11065, 17564, 17704, 21955, 22130, 35128, 43910, 44260, 87820, 88520, 175640, 9717283, 19434566, 38869132, 48586415, 77738264, 97172830, 194345660, 388691320]

約数ペア:

[(1, 388691320), (2, 194345660), (4, 97172830), (5, 77738264), (8, 48586415), (10, 38869132), (20, 19434566), (40, 9717283), (2213, 175640), (4391, 88520), (4426, 87820), (8782, 44260), (8852, 43910), (11065, 35128), (17564, 22130), (17704, 21955)]