20988416

素因数分解:

$2^9\times {\mathrm{40993}}^1$

素因数の和:41011

約数の個数: 20

約数和(自身を含む): 41936862

約数和(自身を除く): 20948446

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 40993, 81986, 163972, 327944, 655888, 1311776, 2623552, 5247104, 10494208, 20988416]

約数ペア:

[(1, 20988416), (2, 10494208), (4, 5247104), (8, 2623552), (16, 1311776), (32, 655888), (64, 327944), (128, 163972), (256, 81986), (512, 40993)]