20996759

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{509}}^1$

素因数の和:670

約数の個数: 16

約数和(自身を含む): 24675840

約数和(自身を除く): 3679081

約数列:

[1, 7, 71, 83, 497, 509, 581, 3563, 5893, 36139, 41251, 42247, 252973, 295729, 2999537, 20996759]

約数ペア:

[(1, 20996759), (7, 2999537), (71, 295729), (83, 252973), (497, 42247), (509, 41251), (581, 36139), (3563, 5893)]