21499816

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3389}}^1$

素因数の和:3469

約数の個数: 32

約数和(自身を含む): 44137800

約数和(自身を除く): 22637984

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 122, 244, 488, 793, 1586, 3172, 3389, 6344, 6778, 13556, 27112, 44057, 88114, 176228, 206729, 352456, 413458, 826916, 1653832, 2687477, 5374954, 10749908, 21499816]

約数ペア:

[(1, 21499816), (2, 10749908), (4, 5374954), (8, 2687477), (13, 1653832), (26, 826916), (52, 413458), (61, 352456), (104, 206729), (122, 176228), (244, 88114), (488, 44057), (793, 27112), (1586, 13556), (3172, 6778), (3389, 6344)]