81656965

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1787}}^1$

素因数の和:1861

約数の個数: 32

約数和(自身を含む): 114145920

約数和(自身を除く): 32488955

約数列:

[1, 5, 13, 19, 37, 65, 95, 185, 247, 481, 703, 1235, 1787, 2405, 3515, 8935, 9139, 23231, 33953, 45695, 66119, 116155, 169765, 330595, 441389, 859547, 1256261, 2206945, 4297735, 6281305, 16331393, 81656965]

約数ペア:

[(1, 81656965), (5, 16331393), (13, 6281305), (19, 4297735), (37, 2206945), (65, 1256261), (95, 859547), (185, 441389), (247, 330595), (481, 169765), (703, 116155), (1235, 66119), (1787, 45695), (2405, 33953), (3515, 23231), (8935, 9139)]