21399050

素因数分解:

$2^1\times 5^2\times {\mathrm{139}}^1\times {\mathrm{3079}}^1$

素因数の和:3230

約数の個数: 24

約数和(自身を含む): 40101600

約数和(自身を除く): 18702550

約数列:

[1, 2, 5, 10, 25, 50, 139, 278, 695, 1390, 3079, 3475, 6158, 6950, 15395, 30790, 76975, 153950, 427981, 855962, 2139905, 4279810, 10699525, 21399050]

約数ペア:

[(1, 21399050), (2, 10699525), (5, 4279810), (10, 2139905), (25, 855962), (50, 427981), (139, 153950), (278, 76975), (695, 30790), (1390, 15395), (3079, 6950), (3475, 6158)]