85261520

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{15907}}^1$

素因数の和:15987

約数の個数: 40

約数和(自身を含む): 201204384

約数和(自身を除く): 115942864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5360, 15907, 31814, 63628, 79535, 127256, 159070, 254512, 318140, 636280, 1065769, 1272560, 2131538, 4263076, 5328845, 8526152, 10657690, 17052304, 21315380, 42630760, 85261520]

約数ペア:

[(1, 85261520), (2, 42630760), (4, 21315380), (5, 17052304), (8, 10657690), (10, 8526152), (16, 5328845), (20, 4263076), (40, 2131538), (67, 1272560), (80, 1065769), (134, 636280), (268, 318140), (335, 254512), (536, 159070), (670, 127256), (1072, 79535), (1340, 63628), (2680, 31814), (5360, 15907)]