31091277

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2687}}^1$

素因数の和:2745

約数の個数: 32

約数和(自身を含む): 51609600

約数和(自身を除く): 20518323

約数列:

[1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1653, 2687, 3857, 8061, 11571, 18809, 51053, 56427, 77923, 153159, 233769, 357371, 545461, 1072113, 1480537, 1636383, 4441611, 10363759, 31091277]

約数ペア:

[(1, 31091277), (3, 10363759), (7, 4441611), (19, 1636383), (21, 1480537), (29, 1072113), (57, 545461), (87, 357371), (133, 233769), (203, 153159), (399, 77923), (551, 56427), (609, 51053), (1653, 18809), (2687, 11571), (3857, 8061)]