20513909

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{467}}^1$

素因数の和:620

約数の個数: 16

約数和(自身を含む): 23063040

約数和(自身を除く): 2549131

約数列:

[1, 13, 31, 109, 403, 467, 1417, 3379, 6071, 14477, 43927, 50903, 188201, 661739, 1577993, 20513909]

約数ペア:

[(1, 20513909), (13, 1577993), (31, 661739), (109, 188201), (403, 50903), (467, 43927), (1417, 14477), (3379, 6071)]