19943421

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{313}}^1\times {\mathrm{317}}^1$

素因数の和:700

約数の個数: 16

約数和(自身を含む): 27159744

約数和(自身を除く): 7216323

約数列:

[1, 3, 67, 201, 313, 317, 939, 951, 20971, 21239, 62913, 63717, 99221, 297663, 6647807, 19943421]

約数ペア:

[(1, 19943421), (3, 6647807), (67, 297663), (201, 99221), (313, 63717), (317, 62913), (939, 21239), (951, 20971)]