80990721

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{16273}}^1$

素因数の和:16365

約数の個数: 24

約数和(自身を含む): 135399680

約数和(自身を除く): 54408959

約数列:

[1, 3, 7, 9, 21, 63, 79, 237, 553, 711, 1659, 4977, 16273, 48819, 113911, 146457, 341733, 1025199, 1285567, 3856701, 8998969, 11570103, 26996907, 80990721]

約数ペア:

[(1, 80990721), (3, 26996907), (7, 11570103), (9, 8998969), (21, 3856701), (63, 1285567), (79, 1025199), (237, 341733), (553, 146457), (711, 113911), (1659, 48819), (4977, 16273)]