19919393

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{521}}^1$

素因数の和:724

約数の個数: 16

約数和(自身を含む): 22888656

約数和(自身を除く): 2969263

約数列:

[1, 13, 17, 173, 221, 521, 2249, 2941, 6773, 8857, 38233, 90133, 115141, 1171729, 1532261, 19919393]

約数ペア:

[(1, 19919393), (13, 1532261), (17, 1171729), (173, 115141), (221, 90133), (521, 38233), (2249, 8857), (2941, 6773)]