639975843

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{1823293}}^1$

素因数の和:1823315

約数の個数: 16

約数和(自身を含む): 1021044640

約数和(自身を除く): 381068797

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 1823293, 5469879, 16409637, 23702809, 49228911, 71108427, 213325281, 639975843]

約数ペア:

[(1, 639975843), (3, 213325281), (9, 71108427), (13, 49228911), (27, 23702809), (39, 16409637), (117, 5469879), (351, 1823293)]