20997130

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:140

約数の個数: 96

約数和(自身を含む): 49488768

約数和(自身を除く): 28491638

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 37, 55, 67, 70, 74, 77, 110, 121, 134, 154, 185, 242, 259, 335, 370, 385, 407, 469, 518, 605, 670, 737, 770, 814, 847, 938, 1210, 1295, 1474, 1694, 2035, 2345, 2479, 2590, 2849, 3685, 4070, 4235, 4477, 4690, 4958, 5159, 5698, 7370, 8107, 8470, 8954, 10318, 12395, 14245, 16214, 17353, 22385, 24790, 25795, 27269, 28490, 31339, 34706, 40535, 44770, 51590, 54538, 56749, 62678, 81070, 86765, 113498, 136345, 156695, 173530, 190883, 272690, 283745, 299959, 313390, 381766, 567490, 599918, 954415, 1499795, 1908830, 2099713, 2999590, 4199426, 10498565, 20997130]

約数ペア:

[(1, 20997130), (2, 10498565), (5, 4199426), (7, 2999590), (10, 2099713), (11, 1908830), (14, 1499795), (22, 954415), (35, 599918), (37, 567490), (55, 381766), (67, 313390), (70, 299959), (74, 283745), (77, 272690), (110, 190883), (121, 173530), (134, 156695), (154, 136345), (185, 113498), (242, 86765), (259, 81070), (335, 62678), (370, 56749), (385, 54538), (407, 51590), (469, 44770), (518, 40535), (605, 34706), (670, 31339), (737, 28490), (770, 27269), (814, 25795), (847, 24790), (938, 22385), (1210, 17353), (1295, 16214), (1474, 14245), (1694, 12395), (2035, 10318), (2345, 8954), (2479, 8470), (2590, 8107), (2849, 7370), (3685, 5698), (4070, 5159), (4235, 4958), (4477, 4690)]