20280519

素因数分解:

$3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3617}}^1$

素因数の和:3719

約数の個数: 24

約数和(自身を含む): 33864480

約数和(自身を除く): 13583961

約数列:

[1, 3, 7, 9, 21, 63, 89, 267, 623, 801, 1869, 3617, 5607, 10851, 25319, 32553, 75957, 227871, 321913, 965739, 2253391, 2897217, 6760173, 20280519]

約数ペア:

[(1, 20280519), (3, 6760173), (7, 2897217), (9, 2253391), (21, 965739), (63, 321913), (89, 227871), (267, 75957), (623, 32553), (801, 25319), (1869, 10851), (3617, 5607)]