21000888010

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{479}}^1\times {\mathrm{82723}}^1$

素因数の和:83262

約数の個数: 32

約数和(自身を含む): 38595709440

約数和(自身を除く): 17594821430

約数列:

[1, 2, 5, 10, 53, 106, 265, 479, 530, 958, 2395, 4790, 25387, 50774, 82723, 126935, 165446, 253870, 413615, 827230, 4384319, 8768638, 21921595, 39624317, 43843190, 79248634, 198121585, 396243170, 2100088801, 4200177602, 10500444005, 21000888010]

約数ペア:

[(1, 21000888010), (2, 10500444005), (5, 4200177602), (10, 2100088801), (53, 396243170), (106, 198121585), (265, 79248634), (479, 43843190), (530, 39624317), (958, 21921595), (2395, 8768638), (4790, 4384319), (25387, 827230), (50774, 413615), (82723, 253870), (126935, 165446)]