991899155

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{421}}^1\times {\mathrm{541}}^1$

素因数の和:1047

約数の個数: 32

約数和(自身を含む): 1306471488

約数和(自身を除く): 314572333

約数列:

[1, 5, 13, 65, 67, 335, 421, 541, 871, 2105, 2705, 4355, 5473, 7033, 27365, 28207, 35165, 36247, 141035, 181235, 227761, 366691, 471211, 1138805, 1833455, 2356055, 2960893, 14804465, 15259987, 76299935, 198379831, 991899155]

約数ペア:

[(1, 991899155), (5, 198379831), (13, 76299935), (65, 15259987), (67, 14804465), (335, 2960893), (421, 2356055), (541, 1833455), (871, 1138805), (2105, 471211), (2705, 366691), (4355, 227761), (5473, 181235), (7033, 141035), (27365, 36247), (28207, 35165)]