20858691

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{179}}^2$

素因数の和:399

約数の個数: 24

約数和(自身を含む): 32994304

約数和(自身を除く): 12135613

約数列:

[1, 3, 7, 21, 31, 93, 179, 217, 537, 651, 1253, 3759, 5549, 16647, 32041, 38843, 96123, 116529, 224287, 672861, 993271, 2979813, 6952897, 20858691]

約数ペア:

[(1, 20858691), (3, 6952897), (7, 2979813), (21, 993271), (31, 672861), (93, 224287), (179, 116529), (217, 96123), (537, 38843), (651, 32041), (1253, 16647), (3759, 5549)]