20631357

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{599}}^1$

素因数の和:737

約数の個数: 24

約数和(自身を含む): 30888000

約数和(自身を除く): 10256643

約数列:

[1, 3, 9, 43, 89, 129, 267, 387, 599, 801, 1797, 3827, 5391, 11481, 25757, 34443, 53311, 77271, 159933, 231813, 479799, 2292373, 6877119, 20631357]

約数ペア:

[(1, 20631357), (3, 6877119), (9, 2292373), (43, 479799), (89, 231813), (129, 159933), (267, 77271), (387, 53311), (599, 34443), (801, 25757), (1797, 11481), (3827, 5391)]