20897643

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{7547}}^1$

素因数の和:7634

約数の個数: 16

約数和(自身を含む): 30433536

約数和(自身を除く): 9535893

約数列:

[1, 3, 13, 39, 71, 213, 923, 2769, 7547, 22641, 98111, 294333, 535837, 1607511, 6965881, 20897643]

約数ペア:

[(1, 20897643), (3, 6965881), (13, 1607511), (39, 535837), (71, 294333), (213, 98111), (923, 22641), (2769, 7547)]