205290680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{353}}^1$

素因数の和:469

約数の個数: 128

約数和(自身を含む): 554618880

約数和(自身を除く): 349328200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 67, 70, 124, 134, 140, 155, 217, 248, 268, 280, 310, 335, 353, 434, 469, 536, 620, 670, 706, 868, 938, 1085, 1240, 1340, 1412, 1736, 1765, 1876, 2077, 2170, 2345, 2471, 2680, 2824, 3530, 3752, 4154, 4340, 4690, 4942, 7060, 8308, 8680, 9380, 9884, 10385, 10943, 12355, 14120, 14539, 16616, 18760, 19768, 20770, 21886, 23651, 24710, 29078, 41540, 43772, 47302, 49420, 54715, 58156, 72695, 76601, 83080, 87544, 94604, 98840, 109430, 116312, 118255, 145390, 153202, 165557, 189208, 218860, 236510, 290780, 306404, 331114, 383005, 437720, 473020, 581560, 612808, 662228, 733181, 766010, 827785, 946040, 1324456, 1466362, 1532020, 1655570, 2932724, 3064040, 3311140, 3665905, 5132267, 5865448, 6622280, 7331810, 10264534, 14663620, 20529068, 25661335, 29327240, 41058136, 51322670, 102645340, 205290680]

約数ペア:

[(1, 205290680), (2, 102645340), (4, 51322670), (5, 41058136), (7, 29327240), (8, 25661335), (10, 20529068), (14, 14663620), (20, 10264534), (28, 7331810), (31, 6622280), (35, 5865448), (40, 5132267), (56, 3665905), (62, 3311140), (67, 3064040), (70, 2932724), (124, 1655570), (134, 1532020), (140, 1466362), (155, 1324456), (217, 946040), (248, 827785), (268, 766010), (280, 733181), (310, 662228), (335, 612808), (353, 581560), (434, 473020), (469, 437720), (536, 383005), (620, 331114), (670, 306404), (706, 290780), (868, 236510), (938, 218860), (1085, 189208), (1240, 165557), (1340, 153202), (1412, 145390), (1736, 118255), (1765, 116312), (1876, 109430), (2077, 98840), (2170, 94604), (2345, 87544), (2471, 83080), (2680, 76601), (2824, 72695), (3530, 58156), (3752, 54715), (4154, 49420), (4340, 47302), (4690, 43772), (4942, 41540), (7060, 29078), (8308, 24710), (8680, 23651), (9380, 21886), (9884, 20770), (10385, 19768), (10943, 18760), (12355, 16616), (14120, 14539)]