51981969

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{223}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 77271040

約数和(自身を除く): 25289071

約数列:

[1, 3, 13, 39, 43, 129, 139, 223, 417, 559, 669, 1677, 1807, 2899, 5421, 5977, 8697, 9589, 17931, 28767, 30997, 77701, 92991, 124657, 233103, 373971, 402961, 1208883, 1332871, 3998613, 17327323, 51981969]

約数ペア:

[(1, 51981969), (3, 17327323), (13, 3998613), (39, 1332871), (43, 1208883), (129, 402961), (139, 373971), (223, 233103), (417, 124657), (559, 92991), (669, 77701), (1677, 30997), (1807, 28767), (2899, 17931), (5421, 9589), (5977, 8697)]