18910755

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 34800480

約数和(自身を除く): 15889725

約数列:

[1, 3, 5, 9, 15, 29, 43, 45, 87, 129, 145, 215, 261, 337, 387, 435, 645, 1011, 1247, 1305, 1685, 1935, 3033, 3741, 5055, 6235, 9773, 11223, 14491, 15165, 18705, 29319, 43473, 48865, 56115, 72455, 87957, 130419, 146595, 217365, 420239, 439785, 652095, 1260717, 2101195, 3782151, 6303585, 18910755]

約数ペア:

[(1, 18910755), (3, 6303585), (5, 3782151), (9, 2101195), (15, 1260717), (29, 652095), (43, 439785), (45, 420239), (87, 217365), (129, 146595), (145, 130419), (215, 87957), (261, 72455), (337, 56115), (387, 48865), (435, 43473), (645, 29319), (1011, 18705), (1247, 15165), (1305, 14491), (1685, 11223), (1935, 9773), (3033, 6235), (3741, 5055)]