20866846

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1489}}^1$

素因数の和:1529

約数の個数: 48

約数和(自身を含む): 42804720

約数和(自身を除く): 21937874

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 49, 77, 91, 98, 143, 154, 182, 286, 539, 637, 1001, 1078, 1274, 1489, 2002, 2978, 7007, 10423, 14014, 16379, 19357, 20846, 32758, 38714, 72961, 114653, 135499, 145922, 212927, 229306, 270998, 425854, 802571, 948493, 1490489, 1605142, 1896986, 2980978, 10433423, 20866846]

約数ペア:

[(1, 20866846), (2, 10433423), (7, 2980978), (11, 1896986), (13, 1605142), (14, 1490489), (22, 948493), (26, 802571), (49, 425854), (77, 270998), (91, 229306), (98, 212927), (143, 145922), (154, 135499), (182, 114653), (286, 72961), (539, 38714), (637, 32758), (1001, 20846), (1078, 19357), (1274, 16379), (1489, 14014), (2002, 10423), (2978, 7007)]