21147236

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{7879}}^1$

素因数の和:7955

約数の個数: 24

約数和(自身を含む): 41039040

約数和(自身を除く): 19891804

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 244, 671, 1342, 2684, 7879, 15758, 31516, 86669, 173338, 346676, 480619, 961238, 1922476, 5286809, 10573618, 21147236]

約数ペア:

[(1, 21147236), (2, 10573618), (4, 5286809), (11, 1922476), (22, 961238), (44, 480619), (61, 346676), (122, 173338), (244, 86669), (671, 31516), (1342, 15758), (2684, 7879)]