18885861

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:230

約数の個数: 36

約数和(自身を含む): 29740932

約数和(自身を除く): 10855071

約数列:

[1, 3, 9, 17, 51, 53, 137, 153, 159, 289, 411, 477, 867, 901, 1233, 2329, 2601, 2703, 6987, 7261, 8109, 15317, 20961, 21783, 39593, 45951, 65349, 118779, 123437, 137853, 356337, 370311, 1110933, 2098429, 6295287, 18885861]

約数ペア:

[(1, 18885861), (3, 6295287), (9, 2098429), (17, 1110933), (51, 370311), (53, 356337), (137, 137853), (153, 123437), (159, 118779), (289, 65349), (411, 45951), (477, 39593), (867, 21783), (901, 20961), (1233, 15317), (2329, 8109), (2601, 7261), (2703, 6987)]