21820216

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{247957}}^1$

素因数の和:247974

約数の個数: 16

約数和(自身を含む): 44632440

約数和(自身を除く): 22812224

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 247957, 495914, 991828, 1983656, 2727527, 5455054, 10910108, 21820216]

約数ペア:

[(1, 21820216), (2, 10910108), (4, 5455054), (8, 2727527), (11, 1983656), (22, 991828), (44, 495914), (88, 247957)]