20849918

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{523}}^1\times {\mathrm{643}}^1$

素因数の和:1199

約数の個数: 16

約数和(自身を含む): 32395776

約数和(自身を除く): 11545858

約数列:

[1, 2, 31, 62, 523, 643, 1046, 1286, 16213, 19933, 32426, 39866, 336289, 672578, 10424959, 20849918]

約数ペア:

[(1, 20849918), (2, 10424959), (31, 672578), (62, 336289), (523, 39866), (643, 32426), (1046, 19933), (1286, 16213)]