256213672

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{223963}}^1$

素因数の和:223993

約数の個数: 32

約数和(自身を含む): 564389280

約数和(自身を除く): 308175608

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 223963, 447926, 895852, 1791704, 2463593, 2911519, 4927186, 5823038, 9854372, 11646076, 19708744, 23292152, 32026709, 64053418, 128106836, 256213672]

約数ペア:

[(1, 256213672), (2, 128106836), (4, 64053418), (8, 32026709), (11, 23292152), (13, 19708744), (22, 11646076), (26, 9854372), (44, 5823038), (52, 4927186), (88, 2911519), (104, 2463593), (143, 1791704), (286, 895852), (572, 447926), (1144, 223963)]