18886998

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:229

約数の個数: 64

約数和(自身を含む): 42964992

約数和(自身を除く): 24077994

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 62, 73, 78, 93, 107, 146, 186, 214, 219, 321, 403, 438, 642, 806, 949, 1209, 1391, 1898, 2263, 2418, 2782, 2847, 3317, 4173, 4526, 5694, 6634, 6789, 7811, 8346, 9951, 13578, 15622, 19902, 23433, 29419, 43121, 46866, 58838, 86242, 88257, 101543, 129363, 176514, 203086, 242141, 258726, 304629, 484282, 609258, 726423, 1452846, 3147833, 6295666, 9443499, 18886998]

約数ペア:

[(1, 18886998), (2, 9443499), (3, 6295666), (6, 3147833), (13, 1452846), (26, 726423), (31, 609258), (39, 484282), (62, 304629), (73, 258726), (78, 242141), (93, 203086), (107, 176514), (146, 129363), (186, 101543), (214, 88257), (219, 86242), (321, 58838), (403, 46866), (438, 43121), (642, 29419), (806, 23433), (949, 19902), (1209, 15622), (1391, 13578), (1898, 9951), (2263, 8346), (2418, 7811), (2782, 6789), (2847, 6634), (3317, 5694), (4173, 4526)]