21140404

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{3767}}^1$

素因数の和:3855

約数の個数: 24

約数和(自身を含む): 39247488

約数和(自身を除く): 18107084

約数列:

[1, 2, 4, 23, 46, 61, 92, 122, 244, 1403, 2806, 3767, 5612, 7534, 15068, 86641, 173282, 229787, 346564, 459574, 919148, 5285101, 10570202, 21140404]

約数ペア:

[(1, 21140404), (2, 10570202), (4, 5285101), (23, 919148), (46, 459574), (61, 346564), (92, 229787), (122, 173282), (244, 86641), (1403, 15068), (2806, 7534), (3767, 5612)]