21519944

素因数分解:

$2^3\times {\mathrm{409}}^1\times {\mathrm{6577}}^1$

素因数の和:6992

約数の個数: 16

約数和(自身を含む): 40454700

約数和(自身を除く): 18934756

約数列:

[1, 2, 4, 8, 409, 818, 1636, 3272, 6577, 13154, 26308, 52616, 2689993, 5379986, 10759972, 21519944]

約数ペア:

[(1, 21519944), (2, 10759972), (4, 5379986), (8, 2689993), (409, 52616), (818, 26308), (1636, 13154), (3272, 6577)]