21112021

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{877}}^1$

素因数の和:1084

約数の個数: 16

約数和(自身を含む): 25567360

約数和(自身を除く): 4455339

約数列:

[1, 7, 19, 133, 181, 877, 1267, 3439, 6139, 16663, 24073, 116641, 158737, 1111159, 3016003, 21112021]

約数ペア:

[(1, 21112021), (7, 3016003), (19, 1111159), (133, 158737), (181, 116641), (877, 24073), (1267, 16663), (3439, 6139)]