77779720

素因数分解:

$2^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{6871}}^1$

素因数の和:7165

約数の個数: 32

約数和(自身を含む): 175648320

約数和(自身を除く): 97868600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 283, 566, 1132, 1415, 2264, 2830, 5660, 6871, 11320, 13742, 27484, 34355, 54968, 68710, 137420, 274840, 1944493, 3888986, 7777972, 9722465, 15555944, 19444930, 38889860, 77779720]

約数ペア:

[(1, 77779720), (2, 38889860), (4, 19444930), (5, 15555944), (8, 9722465), (10, 7777972), (20, 3888986), (40, 1944493), (283, 274840), (566, 137420), (1132, 68710), (1415, 54968), (2264, 34355), (2830, 27484), (5660, 13742), (6871, 11320)]