21437800

素因数分解:

$2^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{2897}}^1$

素因数の和:2950

約数の個数: 48

約数和(自身を含む): 51207660

約数和(自身を除く): 29769860

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 37, 40, 50, 74, 100, 148, 185, 200, 296, 370, 740, 925, 1480, 1850, 2897, 3700, 5794, 7400, 11588, 14485, 23176, 28970, 57940, 72425, 107189, 115880, 144850, 214378, 289700, 428756, 535945, 579400, 857512, 1071890, 2143780, 2679725, 4287560, 5359450, 10718900, 21437800]

約数ペア:

[(1, 21437800), (2, 10718900), (4, 5359450), (5, 4287560), (8, 2679725), (10, 2143780), (20, 1071890), (25, 857512), (37, 579400), (40, 535945), (50, 428756), (74, 289700), (100, 214378), (148, 144850), (185, 115880), (200, 107189), (296, 72425), (370, 57940), (740, 28970), (925, 23176), (1480, 14485), (1850, 11588), (2897, 7400), (3700, 5794)]