21919408

素因数分解:

$2^4\times 7^1\times {\mathrm{195709}}^1$

素因数の和:195724

約数の個数: 20

約数和(自身を含む): 48536080

約数和(自身を除く): 26616672

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 195709, 391418, 782836, 1369963, 1565672, 2739926, 3131344, 5479852, 10959704, 21919408]

約数ペア:

[(1, 21919408), (2, 10959704), (4, 5479852), (7, 3131344), (8, 2739926), (14, 1565672), (16, 1369963), (28, 782836), (56, 391418), (112, 195709)]