21189538

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{3271}}^1$

素因数の和:3393

約数の個数: 16

約数和(自身を含む): 32981760

約数和(自身を除く): 11792222

約数列:

[1, 2, 41, 79, 82, 158, 3239, 3271, 6478, 6542, 134111, 258409, 268222, 516818, 10594769, 21189538]

約数ペア:

[(1, 21189538), (2, 10594769), (41, 516818), (79, 268222), (82, 258409), (158, 134111), (3239, 6542), (3271, 6478)]