1277406832

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{198109}}^1$

素因数の和:198161

約数の個数: 40

約数和(自身を含む): 2751351680

約数和(自身を除く): 1473944848

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 6448, 198109, 396218, 792436, 1584872, 2575417, 3169744, 5150834, 6141379, 10301668, 12282758, 20603336, 24565516, 41206672, 49131032, 79837927, 98262064, 159675854, 319351708, 638703416, 1277406832]

約数ペア:

[(1, 1277406832), (2, 638703416), (4, 319351708), (8, 159675854), (13, 98262064), (16, 79837927), (26, 49131032), (31, 41206672), (52, 24565516), (62, 20603336), (104, 12282758), (124, 10301668), (208, 6141379), (248, 5150834), (403, 3169744), (496, 2575417), (806, 1584872), (1612, 792436), (3224, 396218), (6448, 198109)]