18513404

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{281}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 40238016

約数和(自身を除く): 21724612

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 181, 182, 281, 362, 364, 562, 724, 1124, 1267, 1967, 2353, 2534, 3653, 3934, 4706, 5068, 7306, 7868, 9412, 14612, 16471, 25571, 32942, 50861, 51142, 65884, 101722, 102284, 203444, 356027, 661193, 712054, 1322386, 1424108, 2644772, 4628351, 9256702, 18513404]

約数ペア:

[(1, 18513404), (2, 9256702), (4, 4628351), (7, 2644772), (13, 1424108), (14, 1322386), (26, 712054), (28, 661193), (52, 356027), (91, 203444), (181, 102284), (182, 101722), (281, 65884), (362, 51142), (364, 50861), (562, 32942), (724, 25571), (1124, 16471), (1267, 14612), (1967, 9412), (2353, 7868), (2534, 7306), (3653, 5068), (3934, 4706)]