21256995

素因数分解:

$3^1\times 5^1\times {\mathrm{113}}^1\times {\mathrm{12541}}^1$

素因数の和:12662

約数の個数: 16

約数和(自身を含む): 34314912

約数和(自身を除く): 13057917

約数列:

[1, 3, 5, 15, 113, 339, 565, 1695, 12541, 37623, 62705, 188115, 1417133, 4251399, 7085665, 21256995]

約数ペア:

[(1, 21256995), (3, 7085665), (5, 4251399), (15, 1417133), (113, 188115), (339, 62705), (565, 37623), (1695, 12541)]