20193257

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:237

約数の個数: 24

約数和(自身を含む): 24944832

約数和(自身を除く): 4751575

約数列:

[1, 7, 19, 61, 131, 133, 361, 427, 917, 1159, 2489, 2527, 7991, 8113, 17423, 22021, 47291, 55937, 151829, 154147, 331037, 1062803, 2884751, 20193257]

約数ペア:

[(1, 20193257), (7, 2884751), (19, 1062803), (61, 331037), (131, 154147), (133, 151829), (361, 55937), (427, 47291), (917, 22021), (1159, 17423), (2489, 8113), (2527, 7991)]