78837320

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{7669}}^1$

素因数の和:7937

約数の個数: 32

約数和(自身を含む): 178097400

約数和(自身を除く): 99260080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 7669, 10280, 15338, 30676, 38345, 61352, 76690, 153380, 306760, 1970933, 3941866, 7883732, 9854665, 15767464, 19709330, 39418660, 78837320]

約数ペア:

[(1, 78837320), (2, 39418660), (4, 19709330), (5, 15767464), (8, 9854665), (10, 7883732), (20, 3941866), (40, 1970933), (257, 306760), (514, 153380), (1028, 76690), (1285, 61352), (2056, 38345), (2570, 30676), (5140, 15338), (7669, 10280)]