20651397

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 30820608

約数和(自身を除く): 10169211

約数列:

[1, 3, 13, 39, 53, 97, 103, 159, 291, 309, 689, 1261, 1339, 2067, 3783, 4017, 5141, 5459, 9991, 15423, 16377, 29973, 66833, 70967, 129883, 200499, 212901, 389649, 529523, 1588569, 6883799, 20651397]

約数ペア:

[(1, 20651397), (3, 6883799), (13, 1588569), (39, 529523), (53, 389649), (97, 212901), (103, 200499), (159, 129883), (291, 70967), (309, 66833), (689, 29973), (1261, 16377), (1339, 15423), (2067, 9991), (3783, 5459), (4017, 5141)]