9949640

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{991}}^1$

素因数の和:1253

約数の個数: 32

約数和(自身を含む): 22498560

約数和(自身を除く): 12548920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 991, 1004, 1255, 1982, 2008, 2510, 3964, 4955, 5020, 7928, 9910, 10040, 19820, 39640, 248741, 497482, 994964, 1243705, 1989928, 2487410, 4974820, 9949640]

約数ペア:

[(1, 9949640), (2, 4974820), (4, 2487410), (5, 1989928), (8, 1243705), (10, 994964), (20, 497482), (40, 248741), (251, 39640), (502, 19820), (991, 10040), (1004, 9910), (1255, 7928), (1982, 5020), (2008, 4955), (2510, 3964)]