21521038

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139747}}^1$

素因数の和:139767

約数の個数: 16

約数和(自身を含む): 40247424

約数和(自身を除く): 18726386

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 139747, 279494, 978229, 1537217, 1956458, 3074434, 10760519, 21521038]

約数ペア:

[(1, 21521038), (2, 10760519), (7, 3074434), (11, 1956458), (14, 1537217), (22, 978229), (77, 279494), (154, 139747)]