81389165

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1279}}^1$

素因数の和:1397

約数の個数: 32

約数和(自身を含む): 116121600

約数和(自身を除く): 34732435

約数列:

[1, 5, 11, 13, 55, 65, 89, 143, 445, 715, 979, 1157, 1279, 4895, 5785, 6395, 12727, 14069, 16627, 63635, 70345, 83135, 113831, 182897, 569155, 914485, 1252141, 1479803, 6260705, 7399015, 16277833, 81389165]

約数ペア:

[(1, 81389165), (5, 16277833), (11, 7399015), (13, 6260705), (55, 1479803), (65, 1252141), (89, 914485), (143, 569155), (445, 182897), (715, 113831), (979, 83135), (1157, 70345), (1279, 63635), (4895, 16627), (5785, 14069), (6395, 12727)]