639873

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{1823}}^1$

素因数の和:1845

約数の個数: 16

約数和(自身を含む): 1021440

約数和(自身を除く): 381567

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 1823, 5469, 16407, 23699, 49221, 71097, 213291, 639873]

約数ペア:

[(1, 639873), (3, 213291), (9, 71097), (13, 49221), (27, 23699), (39, 16407), (117, 5469), (351, 1823)]