639968795

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{43969}}^1$

素因数の和:44086

約数の個数: 16

約数和(自身を含む): 797791680

約数和(自身を除く): 157822885

約数列:

[1, 5, 41, 71, 205, 355, 2911, 14555, 43969, 219845, 1802729, 3121799, 9013645, 15608995, 127993759, 639968795]

約数ペア:

[(1, 639968795), (5, 127993759), (41, 15608995), (71, 9013645), (205, 3121799), (355, 1802729), (2911, 219845), (14555, 43969)]