390719720

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{65557}}^1$

素因数の和:65717

約数の個数: 32

約数和(自身を含む): 885033000

約数和(自身を除く): 494313280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 5960, 65557, 131114, 262228, 327785, 524456, 655570, 1311140, 2622280, 9767993, 19535986, 39071972, 48839965, 78143944, 97679930, 195359860, 390719720]

約数ペア:

[(1, 390719720), (2, 195359860), (4, 97679930), (5, 78143944), (8, 48839965), (10, 39071972), (20, 19535986), (40, 9767993), (149, 2622280), (298, 1311140), (596, 655570), (745, 524456), (1192, 327785), (1490, 262228), (2980, 131114), (5960, 65557)]