19900179

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2153}}^1$

素因数の和:2251

約数の個数: 24

約数和(自身を含む): 31362240

約数和(自身を除く): 11462061

約数列:

[1, 3, 9, 13, 39, 79, 117, 237, 711, 1027, 2153, 3081, 6459, 9243, 19377, 27989, 83967, 170087, 251901, 510261, 1530783, 2211131, 6633393, 19900179]

約数ペア:

[(1, 19900179), (3, 6633393), (9, 2211131), (13, 1530783), (39, 510261), (79, 251901), (117, 170087), (237, 83967), (711, 27989), (1027, 19377), (2153, 9243), (3081, 6459)]