20123774979

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{87115909}}^1$

素因数の和:87115930

約数の個数: 16

約数和(自身を含む): 33452509440

約数和(自身を除く): 13328734461

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 87115909, 261347727, 609811363, 958274999, 1829434089, 2874824997, 6707924993, 20123774979]

約数ペア:

[(1, 20123774979), (3, 6707924993), (7, 2874824997), (11, 1829434089), (21, 958274999), (33, 609811363), (77, 261347727), (231, 87115909)]