21068369

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1\times {\mathrm{367}}^1$

素因数の和:572

約数の個数: 16

約数和(自身を含む): 24729600

約数和(自身を除く): 3661231

約数列:

[1, 7, 59, 139, 367, 413, 973, 2569, 8201, 21653, 51013, 57407, 151571, 357091, 3009767, 21068369]

約数ペア:

[(1, 21068369), (7, 3009767), (59, 357091), (139, 151571), (367, 57407), (413, 51013), (973, 21653), (2569, 8201)]