388089

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:157

約数の個数: 24

約数和(自身を含む): 628992

約数和(自身を除く): 240903

約数列:

[1, 3, 9, 13, 31, 39, 93, 107, 117, 279, 321, 403, 963, 1209, 1391, 3317, 3627, 4173, 9951, 12519, 29853, 43121, 129363, 388089]

約数ペア:

[(1, 388089), (3, 129363), (9, 43121), (13, 29853), (31, 12519), (39, 9951), (93, 4173), (107, 3627), (117, 3317), (279, 1391), (321, 1209), (403, 963)]