21157628

素因数分解:

$2^2\times {\mathrm{1171}}^1\times {\mathrm{4517}}^1$

素因数の和:5692

約数の個数: 12

約数和(自身を含む): 37065672

約数和(自身を除く): 15908044

約数列:

[1, 2, 4, 1171, 2342, 4517, 4684, 9034, 18068, 5289407, 10578814, 21157628]

約数ペア:

[(1, 21157628), (2, 10578814), (4, 5289407), (1171, 18068), (2342, 9034), (4517, 4684)]