19773621

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 34444800

約数和(自身を除く): 14671179

約数列:

[1, 3, 7, 9, 21, 29, 63, 79, 87, 137, 203, 237, 261, 411, 553, 609, 711, 959, 1233, 1659, 1827, 2291, 2877, 3973, 4977, 6873, 8631, 10823, 11919, 16037, 20619, 27811, 32469, 35757, 48111, 75761, 83433, 97407, 144333, 227283, 250299, 313867, 681849, 941601, 2197069, 2824803, 6591207, 19773621]

約数ペア:

[(1, 19773621), (3, 6591207), (7, 2824803), (9, 2197069), (21, 941601), (29, 681849), (63, 313867), (79, 250299), (87, 227283), (137, 144333), (203, 97407), (237, 83433), (261, 75761), (411, 48111), (553, 35757), (609, 32469), (711, 27811), (959, 20619), (1233, 16037), (1659, 11919), (1827, 10823), (2291, 8631), (2877, 6873), (3973, 4977)]