645745

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:200

約数の個数: 16

約数和(自身を含む): 839808

約数和(自身を除く): 194063

約数列:

[1, 5, 17, 71, 85, 107, 355, 535, 1207, 1819, 6035, 7597, 9095, 37985, 129149, 645745]

約数ペア:

[(1, 645745), (5, 129149), (17, 37985), (71, 9095), (85, 7597), (107, 6035), (355, 1819), (535, 1207)]