201991293

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{269}}^1$

素因数の和:451

約数の個数: 64

約数和(自身を含む): 357696000

約数和(自身を除く): 155704707

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 137, 189, 203, 261, 269, 411, 609, 783, 807, 959, 1233, 1827, 1883, 2421, 2877, 3699, 3973, 5481, 5649, 7263, 7801, 8631, 11919, 16947, 23403, 25893, 27811, 35757, 36853, 50841, 54607, 70209, 83433, 107271, 110559, 163821, 210627, 250299, 257971, 331677, 491463, 750897, 773913, 995031, 1068737, 1474389, 2321739, 3206211, 6965217, 7481159, 9618633, 22443477, 28855899, 67330431, 201991293]

約数ペア:

[(1, 201991293), (3, 67330431), (7, 28855899), (9, 22443477), (21, 9618633), (27, 7481159), (29, 6965217), (63, 3206211), (87, 2321739), (137, 1474389), (189, 1068737), (203, 995031), (261, 773913), (269, 750897), (411, 491463), (609, 331677), (783, 257971), (807, 250299), (959, 210627), (1233, 163821), (1827, 110559), (1883, 107271), (2421, 83433), (2877, 70209), (3699, 54607), (3973, 50841), (5481, 36853), (5649, 35757), (7263, 27811), (7801, 25893), (8631, 23403), (11919, 16947)]