20039980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{24439}}^1$

素因数の和:24489

約数の個数: 24

約数和(自身を含む): 43112160

約数和(自身を除く): 23072180

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 24439, 48878, 97756, 122195, 244390, 488780, 1001999, 2003998, 4007996, 5009995, 10019990, 20039980]

約数ペア:

[(1, 20039980), (2, 10019990), (4, 5009995), (5, 4007996), (10, 2003998), (20, 1001999), (41, 488780), (82, 244390), (164, 122195), (205, 97756), (410, 48878), (820, 24439)]