21070036

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{613}}^1\times {\mathrm{661}}^1$

素因数の和:1291

約数の個数: 24

約数和(自身を含む): 39833864

約数和(自身を除く): 18763828

約数列:

[1, 2, 4, 13, 26, 52, 613, 661, 1226, 1322, 2452, 2644, 7969, 8593, 15938, 17186, 31876, 34372, 405193, 810386, 1620772, 5267509, 10535018, 21070036]

約数ペア:

[(1, 21070036), (2, 10535018), (4, 5267509), (13, 1620772), (26, 810386), (52, 405193), (613, 34372), (661, 31876), (1226, 17186), (1322, 15938), (2452, 8593), (2644, 7969)]