21084564380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1213151}}^1$

素因数の和:1213250

約数の個数: 48

約数和(自身を含む): 48914288640

約数和(自身を除く): 27829724260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1580, 1738, 3476, 4345, 8690, 17380, 1213151, 2426302, 4852604, 6065755, 12131510, 13344661, 24263020, 26689322, 53378644, 66723305, 95838929, 133446610, 191677858, 266893220, 383355716, 479194645, 958389290, 1054228219, 1916778580, 2108456438, 4216912876, 5271141095, 10542282190, 21084564380]

約数ペア:

[(1, 21084564380), (2, 10542282190), (4, 5271141095), (5, 4216912876), (10, 2108456438), (11, 1916778580), (20, 1054228219), (22, 958389290), (44, 479194645), (55, 383355716), (79, 266893220), (110, 191677858), (158, 133446610), (220, 95838929), (316, 66723305), (395, 53378644), (790, 26689322), (869, 24263020), (1580, 13344661), (1738, 12131510), (3476, 6065755), (4345, 4852604), (8690, 2426302), (17380, 1213151)]