81549387

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{59}}^2\times {\mathrm{137}}^1$

素因数の和:280

約数の個数: 36

約数和(自身を含む): 127051080

約数和(自身を除く): 45501693

約数列:

[1, 3, 9, 19, 57, 59, 137, 171, 177, 411, 531, 1121, 1233, 2603, 3363, 3481, 7809, 8083, 10089, 10443, 23427, 24249, 31329, 66139, 72747, 153577, 198417, 460731, 476897, 595251, 1382193, 1430691, 4292073, 9061043, 27183129, 81549387]

約数ペア:

[(1, 81549387), (3, 27183129), (9, 9061043), (19, 4292073), (57, 1430691), (59, 1382193), (137, 595251), (171, 476897), (177, 460731), (411, 198417), (531, 153577), (1121, 72747), (1233, 66139), (2603, 31329), (3363, 24249), (3481, 23427), (7809, 10443), (8083, 10089)]