21726771

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{311}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 33246720

約数和(自身を除く): 11519949

約数列:

[1, 3, 11, 29, 33, 73, 87, 219, 311, 319, 803, 933, 957, 2117, 2409, 3421, 6351, 9019, 10263, 22703, 23287, 27057, 68109, 69861, 99209, 249733, 297627, 658387, 749199, 1975161, 7242257, 21726771]

約数ペア:

[(1, 21726771), (3, 7242257), (11, 1975161), (29, 749199), (33, 658387), (73, 297627), (87, 249733), (219, 99209), (311, 69861), (319, 68109), (803, 27057), (933, 23287), (957, 22703), (2117, 10263), (2409, 9019), (3421, 6351)]