21416591

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{283}}^1\times {\mathrm{569}}^1$

素因数の和:878

約数の個数: 16

約数和(自身を含む): 25900800

約数和(自身を除く): 4484209

約数列:

[1, 7, 19, 133, 283, 569, 1981, 3983, 5377, 10811, 37639, 75677, 161027, 1127189, 3059513, 21416591]

約数ペア:

[(1, 21416591), (7, 3059513), (19, 1127189), (133, 161027), (283, 75677), (569, 37639), (1981, 10811), (3983, 5377)]