208575801

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{347}}^1$

素因数の和:443

約数の個数: 72

約数和(自身を含む): 371329920

約数和(自身を除く): 162754119

約数列:

[1, 3, 7, 9, 21, 29, 47, 49, 63, 87, 141, 147, 203, 261, 329, 347, 423, 441, 609, 987, 1041, 1363, 1421, 1827, 2303, 2429, 2961, 3123, 4089, 4263, 6909, 7287, 9541, 10063, 12267, 12789, 16309, 17003, 20727, 21861, 28623, 30189, 48927, 51009, 66787, 70441, 85869, 90567, 114163, 146781, 153027, 200361, 211323, 342489, 472961, 493087, 601083, 633969, 799141, 1027467, 1418883, 1479261, 2397423, 3310727, 4256649, 4437783, 7192269, 9932181, 23175089, 29796543, 69525267, 208575801]

約数ペア:

[(1, 208575801), (3, 69525267), (7, 29796543), (9, 23175089), (21, 9932181), (29, 7192269), (47, 4437783), (49, 4256649), (63, 3310727), (87, 2397423), (141, 1479261), (147, 1418883), (203, 1027467), (261, 799141), (329, 633969), (347, 601083), (423, 493087), (441, 472961), (609, 342489), (987, 211323), (1041, 200361), (1363, 153027), (1421, 146781), (1827, 114163), (2303, 90567), (2429, 85869), (2961, 70441), (3123, 66787), (4089, 51009), (4263, 48927), (6909, 30189), (7287, 28623), (9541, 21861), (10063, 20727), (12267, 17003), (12789, 16309)]