21490579

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{491}}^1$

素因数の和:698

約数の個数: 16

約数和(自身を含む): 24655104

約数和(自身を除く): 3164525

約数列:

[1, 11, 23, 173, 253, 491, 1903, 3979, 5401, 11293, 43769, 84943, 124223, 934373, 1953689, 21490579]

約数ペア:

[(1, 21490579), (11, 1953689), (23, 934373), (173, 124223), (253, 84943), (491, 43769), (1903, 11293), (3979, 5401)]