16811955

素因数分解:

$3^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 30741984

約数和(自身を除く): 13930029

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 101, 135, 137, 243, 303, 405, 411, 505, 685, 909, 1215, 1233, 1515, 2055, 2727, 3699, 4545, 6165, 8181, 11097, 13635, 13837, 18495, 24543, 33291, 40905, 41511, 55485, 69185, 122715, 124533, 166455, 207555, 373599, 622665, 1120797, 1867995, 3362391, 5603985, 16811955]

約数ペア:

[(1, 16811955), (3, 5603985), (5, 3362391), (9, 1867995), (15, 1120797), (27, 622665), (45, 373599), (81, 207555), (101, 166455), (135, 124533), (137, 122715), (243, 69185), (303, 55485), (405, 41511), (411, 40905), (505, 33291), (685, 24543), (909, 18495), (1215, 13837), (1233, 13635), (1515, 11097), (2055, 8181), (2727, 6165), (3699, 4545)]