81967425

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{593}}^1$

素因数の和:722

約数の個数: 48

約数和(自身を含む): 144365760

約数和(自身を除く): 62398335

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 97, 285, 291, 475, 485, 593, 1425, 1455, 1779, 1843, 2425, 2965, 5529, 7275, 8895, 9215, 11267, 14825, 27645, 33801, 44475, 46075, 56335, 57521, 138225, 169005, 172563, 281675, 287605, 845025, 862815, 1092899, 1438025, 3278697, 4314075, 5464495, 16393485, 27322475, 81967425]

約数ペア:

[(1, 81967425), (3, 27322475), (5, 16393485), (15, 5464495), (19, 4314075), (25, 3278697), (57, 1438025), (75, 1092899), (95, 862815), (97, 845025), (285, 287605), (291, 281675), (475, 172563), (485, 169005), (593, 138225), (1425, 57521), (1455, 56335), (1779, 46075), (1843, 44475), (2425, 33801), (2965, 27645), (5529, 14825), (7275, 11267), (8895, 9215)]