21536501

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{2549}}^1$

素因数の和:2644

約数の個数: 16

約数和(自身を含む): 26438400

約数和(自身を除く): 4901899

約数列:

[1, 7, 17, 71, 119, 497, 1207, 2549, 8449, 17843, 43333, 180979, 303331, 1266853, 3076643, 21536501]

約数ペア:

[(1, 21536501), (7, 3076643), (17, 1266853), (71, 303331), (119, 180979), (497, 43333), (1207, 17843), (2549, 8449)]