21161706

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 47606400

約数和(自身を除く): 26444694

約数列:

[1, 2, 3, 6, 19, 29, 37, 38, 57, 58, 74, 87, 111, 114, 173, 174, 222, 346, 519, 551, 703, 1038, 1073, 1102, 1406, 1653, 2109, 2146, 3219, 3287, 3306, 4218, 5017, 6401, 6438, 6574, 9861, 10034, 12802, 15051, 19203, 19722, 20387, 30102, 38406, 40774, 61161, 95323, 121619, 122322, 185629, 190646, 243238, 285969, 364857, 371258, 556887, 571938, 729714, 1113774, 3526951, 7053902, 10580853, 21161706]

約数ペア:

[(1, 21161706), (2, 10580853), (3, 7053902), (6, 3526951), (19, 1113774), (29, 729714), (37, 571938), (38, 556887), (57, 371258), (58, 364857), (74, 285969), (87, 243238), (111, 190646), (114, 185629), (173, 122322), (174, 121619), (222, 95323), (346, 61161), (519, 40774), (551, 38406), (703, 30102), (1038, 20387), (1073, 19722), (1102, 19203), (1406, 15051), (1653, 12802), (2109, 10034), (2146, 9861), (3219, 6574), (3287, 6438), (3306, 6401), (4218, 5017)]