21978486

素因数分解:

$2^1\times 3^3\times {\mathrm{353}}^1\times {\mathrm{1153}}^1$

素因数の和:1517

約数の個数: 32

約数和(自身を含む): 49021920

約数和(自身を除く): 27043434

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 353, 706, 1059, 1153, 2118, 2306, 3177, 3459, 6354, 6918, 9531, 10377, 19062, 20754, 31131, 62262, 407009, 814018, 1221027, 2442054, 3663081, 7326162, 10989243, 21978486]

約数ペア:

[(1, 21978486), (2, 10989243), (3, 7326162), (6, 3663081), (9, 2442054), (18, 1221027), (27, 814018), (54, 407009), (353, 62262), (706, 31131), (1059, 20754), (1153, 19062), (2118, 10377), (2306, 9531), (3177, 6918), (3459, 6354)]