1557100520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{905291}}^1$

素因数の和:905345

約数の個数: 32

約数和(自身を含む): 3584956320

約数和(自身を除く): 2027855800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 905291, 1810582, 3621164, 4526455, 7242328, 9052910, 18105820, 36211640, 38927513, 77855026, 155710052, 194637565, 311420104, 389275130, 778550260, 1557100520]

約数ペア:

[(1, 1557100520), (2, 778550260), (4, 389275130), (5, 311420104), (8, 194637565), (10, 155710052), (20, 77855026), (40, 38927513), (43, 36211640), (86, 18105820), (172, 9052910), (215, 7242328), (344, 4526455), (430, 3621164), (860, 1810582), (1720, 905291)]