21615141

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^2\times {\mathrm{277}}^1$

素因数の和:373

約数の個数: 24

約数和(自身を含む): 31291680

約数和(自身を除く): 9676539

約数列:

[1, 3, 19, 37, 57, 111, 277, 703, 831, 1369, 2109, 4107, 5263, 10249, 15789, 26011, 30747, 78033, 194731, 379213, 584193, 1137639, 7205047, 21615141]

約数ペア:

[(1, 21615141), (3, 7205047), (19, 1137639), (37, 584193), (57, 379213), (111, 194731), (277, 78033), (703, 30747), (831, 26011), (1369, 15789), (2109, 10249), (4107, 5263)]