21336955

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{1451}}^1$

素因数の和:1646

約数の個数: 16

約数和(自身を含む): 27285984

約数和(自身を除く): 5949029

約数列:

[1, 5, 17, 85, 173, 865, 1451, 2941, 7255, 14705, 24667, 123335, 251023, 1255115, 4267391, 21336955]

約数ペア:

[(1, 21336955), (5, 4267391), (17, 1255115), (85, 251023), (173, 123335), (865, 24667), (1451, 14705), (2941, 7255)]