21987647

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{383}}^1$

素因数の和:718

約数の個数: 16

約数和(自身を含む): 25546752

約数和(自身を除く): 3559105

約数列:

[1, 11, 17, 187, 307, 383, 3377, 4213, 5219, 6511, 57409, 71621, 117581, 1293391, 1998877, 21987647]

約数ペア:

[(1, 21987647), (11, 1998877), (17, 1293391), (187, 117581), (307, 71621), (383, 57409), (3377, 6511), (4213, 5219)]