19868365

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 27574272

約数和(自身を除く): 7705907

約数列:

[1, 5, 11, 31, 43, 55, 155, 215, 271, 341, 473, 1333, 1355, 1705, 2365, 2981, 6665, 8401, 11653, 14663, 14905, 42005, 58265, 73315, 92411, 128183, 361243, 462055, 640915, 1806215, 3973673, 19868365]

約数ペア:

[(1, 19868365), (5, 3973673), (11, 1806215), (31, 640915), (43, 462055), (55, 361243), (155, 128183), (215, 92411), (271, 73315), (341, 58265), (473, 42005), (1333, 14905), (1355, 14663), (1705, 11653), (2365, 8401), (2981, 6665)]