20493369

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2467}}^1$

素因数の和:2557

約数の個数: 24

約数和(自身を含む): 32340672

約数和(自身を除く): 11847303

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2467, 2769, 7401, 8307, 22203, 32071, 96213, 175157, 288639, 525471, 1576413, 2277041, 6831123, 20493369]

約数ペア:

[(1, 20493369), (3, 6831123), (9, 2277041), (13, 1576413), (39, 525471), (71, 288639), (117, 175157), (213, 96213), (639, 32071), (923, 22203), (2467, 8307), (2769, 7401)]