9781425

素因数分解:

$3^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:399

約数の個数: 48

約数和(自身を含む): 18441280

約数和(自身を除く): 8659855

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 129, 135, 215, 225, 337, 387, 645, 675, 1011, 1075, 1161, 1685, 1935, 3033, 3225, 5055, 5805, 8425, 9099, 9675, 14491, 15165, 25275, 29025, 43473, 45495, 72455, 75825, 130419, 217365, 227475, 362275, 391257, 652095, 1086825, 1956285, 3260475, 9781425]

約数ペア:

[(1, 9781425), (3, 3260475), (5, 1956285), (9, 1086825), (15, 652095), (25, 391257), (27, 362275), (43, 227475), (45, 217365), (75, 130419), (129, 75825), (135, 72455), (215, 45495), (225, 43473), (337, 29025), (387, 25275), (645, 15165), (675, 14491), (1011, 9675), (1075, 9099), (1161, 8425), (1685, 5805), (1935, 5055), (3033, 3225)]