20187321

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{311}}^1$

素因数の和:613

約数の個数: 32

約数和(自身を含む): 33785856

約数和(自身を除く): 13598535

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 281, 311, 843, 933, 1967, 2177, 3091, 3421, 5901, 6531, 9273, 10263, 21637, 23947, 64911, 71841, 87391, 262173, 611737, 961301, 1835211, 2883903, 6729107, 20187321]

約数ペア:

[(1, 20187321), (3, 6729107), (7, 2883903), (11, 1835211), (21, 961301), (33, 611737), (77, 262173), (231, 87391), (281, 71841), (311, 64911), (843, 23947), (933, 21637), (1967, 10263), (2177, 9273), (3091, 6531), (3421, 5901)]