18515709

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{227}}^1$

素因数の和:311

約数の個数: 40

約数和(自身を含む): 29795040

約数和(自身を除く): 11279331

約数列:

[1, 3, 9, 19, 27, 53, 57, 81, 159, 171, 227, 477, 513, 681, 1007, 1431, 1539, 2043, 3021, 4293, 4313, 6129, 9063, 12031, 12939, 18387, 27189, 36093, 38817, 81567, 108279, 116451, 228589, 324837, 349353, 685767, 974511, 2057301, 6171903, 18515709]

約数ペア:

[(1, 18515709), (3, 6171903), (9, 2057301), (19, 974511), (27, 685767), (53, 349353), (57, 324837), (81, 228589), (159, 116451), (171, 108279), (227, 81567), (477, 38817), (513, 36093), (681, 27189), (1007, 18387), (1431, 12939), (1539, 12031), (2043, 9063), (3021, 6129), (4293, 4313)]