9912980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:225

約数の個数: 96

約数和(自身を含む): 26756352

約数和(自身を除く): 16843372

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 41, 44, 55, 70, 77, 82, 110, 140, 154, 157, 164, 205, 220, 287, 308, 314, 385, 410, 451, 574, 628, 770, 785, 820, 902, 1099, 1148, 1435, 1540, 1570, 1727, 1804, 2198, 2255, 2870, 3140, 3157, 3454, 4396, 4510, 5495, 5740, 6314, 6437, 6908, 8635, 9020, 10990, 12089, 12628, 12874, 15785, 17270, 21980, 24178, 25748, 31570, 32185, 34540, 45059, 48356, 60445, 63140, 64370, 70807, 90118, 120890, 128740, 141614, 180236, 225295, 241780, 283228, 354035, 450590, 495649, 708070, 901180, 991298, 1416140, 1982596, 2478245, 4956490, 9912980]

約数ペア:

[(1, 9912980), (2, 4956490), (4, 2478245), (5, 1982596), (7, 1416140), (10, 991298), (11, 901180), (14, 708070), (20, 495649), (22, 450590), (28, 354035), (35, 283228), (41, 241780), (44, 225295), (55, 180236), (70, 141614), (77, 128740), (82, 120890), (110, 90118), (140, 70807), (154, 64370), (157, 63140), (164, 60445), (205, 48356), (220, 45059), (287, 34540), (308, 32185), (314, 31570), (385, 25748), (410, 24178), (451, 21980), (574, 17270), (628, 15785), (770, 12874), (785, 12628), (820, 12089), (902, 10990), (1099, 9020), (1148, 8635), (1435, 6908), (1540, 6437), (1570, 6314), (1727, 5740), (1804, 5495), (2198, 4510), (2255, 4396), (2870, 3454), (3140, 3157)]