639597

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{229}}^1$

素因数の和:265

約数の個数: 24

約数和(自身を含む): 1048800

約数和(自身を除く): 409203

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 229, 399, 687, 931, 1603, 2793, 4351, 4809, 11221, 13053, 30457, 33663, 91371, 213199, 639597]

約数ペア:

[(1, 639597), (3, 213199), (7, 91371), (19, 33663), (21, 30457), (49, 13053), (57, 11221), (133, 4809), (147, 4351), (229, 2793), (399, 1603), (687, 931)]