19866840

素因数分解:

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

素因数の和:441

約数の個数: 128

約数和(自身を含む): 69327360

約数和(自身を除く): 49460520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 67, 70, 84, 105, 120, 134, 140, 168, 201, 210, 268, 280, 335, 353, 402, 420, 469, 536, 670, 706, 804, 840, 938, 1005, 1059, 1340, 1407, 1412, 1608, 1765, 1876, 2010, 2118, 2345, 2471, 2680, 2814, 2824, 3530, 3752, 4020, 4236, 4690, 4942, 5295, 5628, 7035, 7060, 7413, 8040, 8472, 9380, 9884, 10590, 11256, 12355, 14070, 14120, 14826, 18760, 19768, 21180, 23651, 24710, 28140, 29652, 37065, 42360, 47302, 49420, 56280, 59304, 70953, 74130, 94604, 98840, 118255, 141906, 148260, 165557, 189208, 236510, 283812, 296520, 331114, 354765, 473020, 496671, 567624, 662228, 709530, 827785, 946040, 993342, 1324456, 1419060, 1655570, 1986684, 2483355, 2838120, 3311140, 3973368, 4966710, 6622280, 9933420, 19866840]

約数ペア:

[(1, 19866840), (2, 9933420), (3, 6622280), (4, 4966710), (5, 3973368), (6, 3311140), (7, 2838120), (8, 2483355), (10, 1986684), (12, 1655570), (14, 1419060), (15, 1324456), (20, 993342), (21, 946040), (24, 827785), (28, 709530), (30, 662228), (35, 567624), (40, 496671), (42, 473020), (56, 354765), (60, 331114), (67, 296520), (70, 283812), (84, 236510), (105, 189208), (120, 165557), (134, 148260), (140, 141906), (168, 118255), (201, 98840), (210, 94604), (268, 74130), (280, 70953), (335, 59304), (353, 56280), (402, 49420), (420, 47302), (469, 42360), (536, 37065), (670, 29652), (706, 28140), (804, 24710), (840, 23651), (938, 21180), (1005, 19768), (1059, 18760), (1340, 14826), (1407, 14120), (1412, 14070), (1608, 12355), (1765, 11256), (1876, 10590), (2010, 9884), (2118, 9380), (2345, 8472), (2471, 8040), (2680, 7413), (2814, 7060), (2824, 7035), (3530, 5628), (3752, 5295), (4020, 4942), (4236, 4690)]