199620140

素因数分解:

$2^2\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{4993}}^1$

素因数の和:7001

約数の個数: 24

約数和(自身を含む): 419496000

約数和(自身を除く): 219875860

約数列:

[1, 2, 4, 5, 10, 20, 1999, 3998, 4993, 7996, 9986, 9995, 19972, 19990, 24965, 39980, 49930, 99860, 9981007, 19962014, 39924028, 49905035, 99810070, 199620140]

約数ペア:

[(1, 199620140), (2, 99810070), (4, 49905035), (5, 39924028), (10, 19962014), (20, 9981007), (1999, 99860), (3998, 49930), (4993, 39980), (7996, 24965), (9986, 19990), (9995, 19972)]