21026845

素因数分解:

$5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{1427}}^1$

素因数の和:1860

約数の個数: 16

約数和(自身を含む): 28925568

約数和(自身を除く): 7898723

約数列:

[1, 5, 7, 35, 421, 1427, 2105, 2947, 7135, 9989, 14735, 49945, 600767, 3003835, 4205369, 21026845]

約数ペア:

[(1, 21026845), (5, 4205369), (7, 3003835), (35, 600767), (421, 49945), (1427, 14735), (2105, 9989), (2947, 7135)]