20857185

素因数分解:

$3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{5867}}^1$

素因数の和:5957

約数の個数: 24

約数和(自身を含む): 36616320

約数和(自身を除く): 15759135

約数列:

[1, 3, 5, 9, 15, 45, 79, 237, 395, 711, 1185, 3555, 5867, 17601, 29335, 52803, 88005, 264015, 463493, 1390479, 2317465, 4171437, 6952395, 20857185]

約数ペア:

[(1, 20857185), (3, 6952395), (5, 4171437), (9, 2317465), (15, 1390479), (45, 463493), (79, 264015), (237, 88005), (395, 52803), (711, 29335), (1185, 17601), (3555, 5867)]