21091384

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{64303}}^1$

素因数の和:64350

約数の個数: 16

約数和(自身を含む): 40511520

約数和(自身を除く): 19420136

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 64303, 128606, 257212, 514424, 2636423, 5272846, 10545692, 21091384]

約数ペア:

[(1, 21091384), (2, 10545692), (4, 5272846), (8, 2636423), (41, 514424), (82, 257212), (164, 128606), (328, 64303)]