21143998

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{431}}^1\times {\mathrm{1291}}^1$

素因数の和:1743

約数の個数: 16

約数和(自身を含む): 33488640

約数和(自身を除く): 12344642

約数列:

[1, 2, 19, 38, 431, 862, 1291, 2582, 8189, 16378, 24529, 49058, 556421, 1112842, 10571999, 21143998]

約数ペア:

[(1, 21143998), (2, 10571999), (19, 1112842), (38, 556421), (431, 49058), (862, 24529), (1291, 16378), (2582, 8189)]