20218964

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{1193}}^1$

素因数の和:1439

約数の個数: 24

約数和(自身を含む): 37443840

約数和(自身を除く): 17224876

約数列:

[1, 2, 4, 19, 38, 76, 223, 446, 892, 1193, 2386, 4237, 4772, 8474, 16948, 22667, 45334, 90668, 266039, 532078, 1064156, 5054741, 10109482, 20218964]

約数ペア:

[(1, 20218964), (2, 10109482), (4, 5054741), (19, 1064156), (38, 532078), (76, 266039), (223, 90668), (446, 45334), (892, 22667), (1193, 16948), (2386, 8474), (4237, 4772)]