20609955

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19913}}^1$

素因数の和:19947

約数の個数: 24

約数和(自身を含む): 37279008

約数和(自身を除く): 16669053

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 19913, 59739, 99565, 179217, 298695, 457999, 896085, 1373997, 2289995, 4121991, 6869985, 20609955]

約数ペア:

[(1, 20609955), (3, 6869985), (5, 4121991), (9, 2289995), (15, 1373997), (23, 896085), (45, 457999), (69, 298695), (115, 179217), (207, 99565), (345, 59739), (1035, 19913)]