388395

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{137}}^1$

素因数の和:161

約数の個数: 40

約数和(自身を含む): 801504

約数和(自身を除く): 413109

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 137, 189, 315, 405, 411, 567, 685, 945, 959, 1233, 2055, 2835, 2877, 3699, 4795, 6165, 8631, 11097, 14385, 18495, 25893, 43155, 55485, 77679, 129465, 388395]

約数ペア:

[(1, 388395), (3, 129465), (5, 77679), (7, 55485), (9, 43155), (15, 25893), (21, 18495), (27, 14385), (35, 11097), (45, 8631), (63, 6165), (81, 4795), (105, 3699), (135, 2877), (137, 2835), (189, 2055), (315, 1233), (405, 959), (411, 945), (567, 685)]