20798942409

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1\times {\mathrm{21059}}^1$

素因数の和:21390

約数の個数: 48

約数和(自身を含む): 35035079040

約数和(自身を除く): 14236136631

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 257, 427, 549, 771, 1281, 1799, 2313, 3843, 5397, 15677, 16191, 21059, 47031, 63177, 109739, 141093, 147413, 189531, 329217, 442239, 987651, 1284599, 1326717, 3853797, 5412163, 8992193, 11561391, 16236489, 26976579, 37885141, 48709467, 80929737, 113655423, 330141943, 340966269, 990425829, 2310993601, 2971277487, 6932980803, 20798942409]

約数ペア:

[(1, 20798942409), (3, 6932980803), (7, 2971277487), (9, 2310993601), (21, 990425829), (61, 340966269), (63, 330141943), (183, 113655423), (257, 80929737), (427, 48709467), (549, 37885141), (771, 26976579), (1281, 16236489), (1799, 11561391), (2313, 8992193), (3843, 5412163), (5397, 3853797), (15677, 1326717), (16191, 1284599), (21059, 987651), (47031, 442239), (63177, 329217), (109739, 189531), (141093, 147413)]