21139995

素因数分解:

$3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{23887}}^1$

素因数の和:23954

約数の個数: 16

約数和(自身を含む): 34398720

約数和(自身を除く): 13258725

約数列:

[1, 3, 5, 15, 59, 177, 295, 885, 23887, 71661, 119435, 358305, 1409333, 4227999, 7046665, 21139995]

約数ペア:

[(1, 21139995), (3, 7046665), (5, 4227999), (15, 1409333), (59, 358305), (177, 119435), (295, 71661), (885, 23887)]