638092468

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{113}}^2$

素因数の和:305

約数の個数: 54

約数和(自身を含む): 1253696262

約数和(自身を除く): 615603794

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 113, 124, 226, 403, 452, 806, 961, 1469, 1612, 1922, 2938, 3503, 3844, 5876, 7006, 12493, 12769, 14012, 24986, 25538, 45539, 49972, 51076, 91078, 108593, 165997, 182156, 217186, 331994, 395839, 434372, 663988, 791678, 1411709, 1583356, 2823418, 5145907, 5646836, 10291814, 12271009, 20583628, 24542018, 49084036, 159523117, 319046234, 638092468]

約数ペア:

[(1, 638092468), (2, 319046234), (4, 159523117), (13, 49084036), (26, 24542018), (31, 20583628), (52, 12271009), (62, 10291814), (113, 5646836), (124, 5145907), (226, 2823418), (403, 1583356), (452, 1411709), (806, 791678), (961, 663988), (1469, 434372), (1612, 395839), (1922, 331994), (2938, 217186), (3503, 182156), (3844, 165997), (5876, 108593), (7006, 91078), (12493, 51076), (12769, 49972), (14012, 45539), (24986, 25538)]