71348840

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{4493}}^1$

素因数の和:4901

約数の個数: 32

約数和(自身を含む): 160975080

約数和(自身を除く): 89626240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 3176, 3970, 4493, 7940, 8986, 15880, 17972, 22465, 35944, 44930, 89860, 179720, 1783721, 3567442, 7134884, 8918605, 14269768, 17837210, 35674420, 71348840]

約数ペア:

[(1, 71348840), (2, 35674420), (4, 17837210), (5, 14269768), (8, 8918605), (10, 7134884), (20, 3567442), (40, 1783721), (397, 179720), (794, 89860), (1588, 44930), (1985, 35944), (3176, 22465), (3970, 17972), (4493, 15880), (7940, 8986)]