81153560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{106781}}^1$

素因数の和:106811

約数の個数: 32

約数和(自身を含む): 192207600

約数和(自身を除く): 111054040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 106781, 213562, 427124, 533905, 854248, 1067810, 2028839, 2135620, 4057678, 4271240, 8115356, 10144195, 16230712, 20288390, 40576780, 81153560]

約数ペア:

[(1, 81153560), (2, 40576780), (4, 20288390), (5, 16230712), (8, 10144195), (10, 8115356), (19, 4271240), (20, 4057678), (38, 2135620), (40, 2028839), (76, 1067810), (95, 854248), (152, 533905), (190, 427124), (380, 213562), (760, 106781)]