21972188

素因数分解:

$2^2\times 7^2\times {\mathrm{112103}}^1$

素因数の和:112121

約数の個数: 18

約数和(自身を含む): 44729496

約数和(自身を除く): 22757308

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 112103, 224206, 448412, 784721, 1569442, 3138884, 5493047, 10986094, 21972188]

約数ペア:

[(1, 21972188), (2, 10986094), (4, 5493047), (7, 3138884), (14, 1569442), (28, 784721), (49, 448412), (98, 224206), (196, 112103)]