664520

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{449}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 1539000

約数和(自身を除く): 874480

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 449, 740, 898, 1480, 1796, 2245, 3592, 4490, 8980, 16613, 17960, 33226, 66452, 83065, 132904, 166130, 332260, 664520]

約数ペア:

[(1, 664520), (2, 332260), (4, 166130), (5, 132904), (8, 83065), (10, 66452), (20, 33226), (37, 17960), (40, 16613), (74, 8980), (148, 4490), (185, 3592), (296, 2245), (370, 1796), (449, 1480), (740, 898)]