21915595

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{7841}}^1$

素因数の和:7902

約数の個数: 16

約数和(自身を含む): 28984032

約数和(自身を除く): 7068437

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 7841, 39205, 101933, 337163, 509665, 1685815, 4383119, 21915595]

約数ペア:

[(1, 21915595), (5, 4383119), (13, 1685815), (43, 509665), (65, 337163), (215, 101933), (559, 39205), (2795, 7841)]