20396915

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1709}}^1$

素因数の和:1763

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 11121805

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 217, 341, 385, 1085, 1705, 1709, 2387, 8545, 11935, 11963, 18799, 52979, 59815, 93995, 131593, 264895, 370853, 582769, 657965, 1854265, 2913845, 4079383, 20396915]

約数ペア:

[(1, 20396915), (5, 4079383), (7, 2913845), (11, 1854265), (31, 657965), (35, 582769), (55, 370853), (77, 264895), (155, 131593), (217, 93995), (341, 59815), (385, 52979), (1085, 18799), (1705, 11963), (1709, 11935), (2387, 8545)]