21164696

素因数分解:

$2^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2719}}^1$

素因数の和:2871

約数の個数: 32

約数和(自身を含む): 45696000

約数和(自身を除く): 24531304

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 139, 278, 556, 973, 1112, 1946, 2719, 3892, 5438, 7784, 10876, 19033, 21752, 38066, 76132, 152264, 377941, 755882, 1511764, 2645587, 3023528, 5291174, 10582348, 21164696]

約数ペア:

[(1, 21164696), (2, 10582348), (4, 5291174), (7, 3023528), (8, 2645587), (14, 1511764), (28, 755882), (56, 377941), (139, 152264), (278, 76132), (556, 38066), (973, 21752), (1112, 19033), (1946, 10876), (2719, 7784), (3892, 5438)]