315089680

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{19993}}^1$

素因数の和:20203

約数の個数: 40

約数和(自身を含む): 736339032

約数和(自身を除く): 421249352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 3152, 3940, 7880, 15760, 19993, 39986, 79972, 99965, 159944, 199930, 319888, 399860, 799720, 1599440, 3938621, 7877242, 15754484, 19693105, 31508968, 39386210, 63017936, 78772420, 157544840, 315089680]

約数ペア:

[(1, 315089680), (2, 157544840), (4, 78772420), (5, 63017936), (8, 39386210), (10, 31508968), (16, 19693105), (20, 15754484), (40, 7877242), (80, 3938621), (197, 1599440), (394, 799720), (788, 399860), (985, 319888), (1576, 199930), (1970, 159944), (3152, 99965), (3940, 79972), (7880, 39986), (15760, 19993)]