20199798

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{271}}^1$

素因数の和:421

約数の個数: 48

約数和(自身を含む): 45444672

約数和(自身を除く): 25244874

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 101, 123, 202, 246, 271, 303, 369, 542, 606, 738, 813, 909, 1626, 1818, 2439, 4141, 4878, 8282, 11111, 12423, 22222, 24846, 27371, 33333, 37269, 54742, 66666, 74538, 82113, 99999, 164226, 199998, 246339, 492678, 1122211, 2244422, 3366633, 6733266, 10099899, 20199798]

約数ペア:

[(1, 20199798), (2, 10099899), (3, 6733266), (6, 3366633), (9, 2244422), (18, 1122211), (41, 492678), (82, 246339), (101, 199998), (123, 164226), (202, 99999), (246, 82113), (271, 74538), (303, 66666), (369, 54742), (542, 37269), (606, 33333), (738, 27371), (813, 24846), (909, 22222), (1626, 12423), (1818, 11111), (2439, 8282), (4141, 4878)]