81493156975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^2\times {\mathrm{102061}}^1$

素因数の和:102172

約数の個数: 36

約数和(自身を含む): 109028752120

約数和(自身を除く): 27535595145

約数列:

[1, 5, 19, 25, 41, 95, 205, 475, 779, 1025, 1681, 3895, 8405, 19475, 31939, 42025, 102061, 159695, 510305, 798475, 1939159, 2551525, 4184501, 9695795, 20922505, 48478975, 79505519, 104612525, 171564541, 397527595, 857822705, 1987637975, 3259726279, 4289113525, 16298631395, 81493156975]

約数ペア:

[(1, 81493156975), (5, 16298631395), (19, 4289113525), (25, 3259726279), (41, 1987637975), (95, 857822705), (205, 397527595), (475, 171564541), (779, 104612525), (1025, 79505519), (1681, 48478975), (3895, 20922505), (8405, 9695795), (19475, 4184501), (31939, 2551525), (42025, 1939159), (102061, 798475), (159695, 510305)]