21041979

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{24439}}^1$

素因数の和:24490

約数の個数: 16

約数和(自身を含む): 32847360

約数和(自身を除く): 11805381

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 24439, 73317, 171073, 513219, 1001999, 3005997, 7013993, 21041979]

約数ペア:

[(1, 21041979), (3, 7013993), (7, 3005997), (21, 1001999), (41, 513219), (123, 171073), (287, 73317), (861, 24439)]