20550861

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:654

約数の個数: 32

約数和(自身を含む): 32215040

約数和(自身を除く): 11664179

約数列:

[1, 3, 9, 27, 31, 43, 93, 129, 279, 387, 571, 837, 1161, 1333, 1713, 3999, 5139, 11997, 15417, 17701, 24553, 35991, 53103, 73659, 159309, 220977, 477927, 662931, 761143, 2283429, 6850287, 20550861]

約数ペア:

[(1, 20550861), (3, 6850287), (9, 2283429), (27, 761143), (31, 662931), (43, 477927), (93, 220977), (129, 159309), (279, 73659), (387, 53103), (571, 35991), (837, 24553), (1161, 17701), (1333, 15417), (1713, 11997), (3999, 5139)]