20535219

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 33415200

約数和(自身を除く): 12879981

約数列:

[1, 3, 9, 19, 29, 41, 57, 87, 101, 123, 171, 261, 303, 369, 551, 779, 909, 1189, 1653, 1919, 2337, 2929, 3567, 4141, 4959, 5757, 7011, 8787, 10701, 12423, 17271, 22591, 26361, 37269, 55651, 67773, 78679, 120089, 166953, 203319, 236037, 360267, 500859, 708111, 1080801, 2281691, 6845073, 20535219]

約数ペア:

[(1, 20535219), (3, 6845073), (9, 2281691), (19, 1080801), (29, 708111), (41, 500859), (57, 360267), (87, 236037), (101, 203319), (123, 166953), (171, 120089), (261, 78679), (303, 67773), (369, 55651), (551, 37269), (779, 26361), (909, 22591), (1189, 17271), (1653, 12423), (1919, 10701), (2337, 8787), (2929, 7011), (3567, 5757), (4141, 4959)]