21240448

素因数分解:

$2^7\times {\mathrm{165941}}^1$

素因数の和:165955

約数の個数: 16

約数和(自身を含む): 42315210

約数和(自身を除く): 21074762

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 165941, 331882, 663764, 1327528, 2655056, 5310112, 10620224, 21240448]

約数ペア:

[(1, 21240448), (2, 10620224), (4, 5310112), (8, 2655056), (16, 1327528), (32, 663764), (64, 331882), (128, 165941)]