20439562

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:199

約数の個数: 48

約数和(自身を含む): 37202760

約数和(自身を除く): 16763198

約数列:

[1, 2, 11, 13, 22, 26, 73, 89, 121, 143, 146, 178, 242, 286, 803, 949, 979, 1157, 1573, 1606, 1898, 1958, 2314, 3146, 6497, 8833, 10439, 10769, 12727, 12994, 17666, 20878, 21538, 25454, 71467, 84461, 114829, 139997, 142934, 168922, 229658, 279994, 786137, 929071, 1572274, 1858142, 10219781, 20439562]

約数ペア:

[(1, 20439562), (2, 10219781), (11, 1858142), (13, 1572274), (22, 929071), (26, 786137), (73, 279994), (89, 229658), (121, 168922), (143, 142934), (146, 139997), (178, 114829), (242, 84461), (286, 71467), (803, 25454), (949, 21538), (979, 20878), (1157, 17666), (1573, 12994), (1606, 12727), (1898, 10769), (1958, 10439), (2314, 8833), (3146, 6497)]