140517320

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{13669}}^1$

素因数の和:13937

約数の個数: 32

約数和(自身を含む): 317417400

約数和(自身を除く): 176900080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 13669, 27338, 54676, 68345, 109352, 136690, 273380, 546760, 3512933, 7025866, 14051732, 17564665, 28103464, 35129330, 70258660, 140517320]

約数ペア:

[(1, 140517320), (2, 70258660), (4, 35129330), (5, 28103464), (8, 17564665), (10, 14051732), (20, 7025866), (40, 3512933), (257, 546760), (514, 273380), (1028, 136690), (1285, 109352), (2056, 68345), (2570, 54676), (5140, 27338), (10280, 13669)]