19782945

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4831}}^1$

素因数の和:4862

約数の個数: 48

約数和(自身を含む): 42212352

約数和(自身を除く): 22429407

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 4831, 14493, 24155, 33817, 43479, 62803, 72465, 101451, 169085, 188409, 217395, 304353, 314015, 439621, 507255, 565227, 942045, 1318863, 1521765, 2198105, 2826135, 3956589, 6594315, 19782945]

約数ペア:

[(1, 19782945), (3, 6594315), (5, 3956589), (7, 2826135), (9, 2198105), (13, 1521765), (15, 1318863), (21, 942045), (35, 565227), (39, 507255), (45, 439621), (63, 314015), (65, 304353), (91, 217395), (105, 188409), (117, 169085), (195, 101451), (273, 72465), (315, 62803), (455, 43479), (585, 33817), (819, 24155), (1365, 14493), (4095, 4831)]