20172117

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 11761323

約数列:

[1, 3, 7, 21, 43, 89, 129, 251, 267, 301, 623, 753, 903, 1757, 1869, 3827, 5271, 10793, 11481, 22339, 26789, 32379, 67017, 75551, 80367, 156373, 226653, 469119, 960577, 2881731, 6724039, 20172117]

約数ペア:

[(1, 20172117), (3, 6724039), (7, 2881731), (21, 960577), (43, 469119), (89, 226653), (129, 156373), (251, 80367), (267, 75551), (301, 67017), (623, 32379), (753, 26789), (903, 22339), (1757, 11481), (1869, 10793), (3827, 5271)]