21820988

素因数分解:

$2^2\times 7^1\times {\mathrm{619}}^1\times {\mathrm{1259}}^1$

素因数の和:1889

約数の個数: 24

約数和(自身を含む): 43747200

約数和(自身を除く): 21926212

約数列:

[1, 2, 4, 7, 14, 28, 619, 1238, 1259, 2476, 2518, 4333, 5036, 8666, 8813, 17332, 17626, 35252, 779321, 1558642, 3117284, 5455247, 10910494, 21820988]

約数ペア:

[(1, 21820988), (2, 10910494), (4, 5455247), (7, 3117284), (14, 1558642), (28, 779321), (619, 35252), (1238, 17626), (1259, 17332), (2476, 8813), (2518, 8666), (4333, 5036)]