81889275

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1787}}^1$

素因数の和:1860

約数の個数: 48

約数和(自身を含む): 148990464

約数和(自身を除く): 67101189

約数列:

[1, 3, 5, 13, 15, 25, 39, 47, 65, 75, 141, 195, 235, 325, 611, 705, 975, 1175, 1787, 1833, 3055, 3525, 5361, 8935, 9165, 15275, 23231, 26805, 44675, 45825, 69693, 83989, 116155, 134025, 251967, 348465, 419945, 580775, 1091857, 1259835, 1742325, 2099725, 3275571, 5459285, 6299175, 16377855, 27296425, 81889275]

約数ペア:

[(1, 81889275), (3, 27296425), (5, 16377855), (13, 6299175), (15, 5459285), (25, 3275571), (39, 2099725), (47, 1742325), (65, 1259835), (75, 1091857), (141, 580775), (195, 419945), (235, 348465), (325, 251967), (611, 134025), (705, 116155), (975, 83989), (1175, 69693), (1787, 45825), (1833, 44675), (3055, 26805), (3525, 23231), (5361, 15275), (8935, 9165)]