21291609

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{3491}}^1$

素因数の和:3620

約数の個数: 16

約数和(自身を含む): 30170880

約数和(自身を除く): 8879271

約数列:

[1, 3, 19, 57, 107, 321, 2033, 3491, 6099, 10473, 66329, 198987, 373537, 1120611, 7097203, 21291609]

約数ペア:

[(1, 21291609), (3, 7097203), (19, 1120611), (57, 373537), (107, 198987), (321, 66329), (2033, 10473), (3491, 6099)]