208751319

素因数分解:

$3^2\times 7^2\times {\mathrm{571}}^1\times {\mathrm{829}}^1$

素因数の和:1420

約数の個数: 36

約数和(自身を含む): 351797160

約数和(自身を除く): 143045841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 571, 829, 1713, 2487, 3997, 5139, 5803, 7461, 11991, 17409, 27979, 35973, 40621, 52227, 83937, 121863, 251811, 365589, 473359, 1420077, 3313513, 4260231, 9940539, 23194591, 29821617, 69583773, 208751319]

約数ペア:

[(1, 208751319), (3, 69583773), (7, 29821617), (9, 23194591), (21, 9940539), (49, 4260231), (63, 3313513), (147, 1420077), (441, 473359), (571, 365589), (829, 251811), (1713, 121863), (2487, 83937), (3997, 52227), (5139, 40621), (5803, 35973), (7461, 27979), (11991, 17409)]