20911955

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{347}}^1\times {\mathrm{709}}^1$

素因数の和:1078

約数の個数: 16

約数和(自身を含む): 26684640

約数和(自身を除く): 5772685

約数列:

[1, 5, 17, 85, 347, 709, 1735, 3545, 5899, 12053, 29495, 60265, 246023, 1230115, 4182391, 20911955]

約数ペア:

[(1, 20911955), (5, 4182391), (17, 1230115), (85, 246023), (347, 60265), (709, 29495), (1735, 12053), (3545, 5899)]