199983681

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:231

約数の個数: 64

約数和(自身を含む): 321408000

約数和(自身を除く): 121424319

約数列:

[1, 3, 9, 27, 29, 53, 61, 79, 87, 159, 183, 237, 261, 477, 549, 711, 783, 1431, 1537, 1647, 1769, 2133, 2291, 3233, 4187, 4611, 4819, 5307, 6873, 9699, 12561, 13833, 14457, 15921, 20619, 29097, 37683, 41499, 43371, 47763, 61857, 87291, 93757, 113049, 121423, 130113, 139751, 255407, 281271, 364269, 419253, 766221, 843813, 1092807, 1257759, 2298663, 2531439, 3278421, 3773277, 6895989, 7406803, 22220409, 66661227, 199983681]

約数ペア:

[(1, 199983681), (3, 66661227), (9, 22220409), (27, 7406803), (29, 6895989), (53, 3773277), (61, 3278421), (79, 2531439), (87, 2298663), (159, 1257759), (183, 1092807), (237, 843813), (261, 766221), (477, 419253), (549, 364269), (711, 281271), (783, 255407), (1431, 139751), (1537, 130113), (1647, 121423), (1769, 113049), (2133, 93757), (2291, 87291), (3233, 61857), (4187, 47763), (4611, 43371), (4819, 41499), (5307, 37683), (6873, 29097), (9699, 20619), (12561, 15921), (13833, 14457)]