39740420

素因数分解:

$2^2\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1993}}^1$

素因数の和:2999

約数の個数: 24

約数和(自身を含む): 83580504

約数和(自身を除く): 43840084

約数列:

[1, 2, 4, 5, 10, 20, 997, 1993, 1994, 3986, 3988, 4985, 7972, 9965, 9970, 19930, 19940, 39860, 1987021, 3974042, 7948084, 9935105, 19870210, 39740420]

約数ペア:

[(1, 39740420), (2, 19870210), (4, 9935105), (5, 7948084), (10, 3974042), (20, 1987021), (997, 39860), (1993, 19940), (1994, 19930), (3986, 9970), (3988, 9965), (4985, 7972)]