20784855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15227}}^1$

素因数の和:15255

約数の個数: 32

約数和(自身を含む): 40932864

約数和(自身を除く): 20148009

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 15227, 45681, 76135, 106589, 197951, 228405, 319767, 532945, 593853, 989755, 1385657, 1598835, 2969265, 4156971, 6928285, 20784855]

約数ペア:

[(1, 20784855), (3, 6928285), (5, 4156971), (7, 2969265), (13, 1598835), (15, 1385657), (21, 989755), (35, 593853), (39, 532945), (65, 319767), (91, 228405), (105, 197951), (195, 106589), (273, 76135), (455, 45681), (1365, 15227)]