20475189

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1601}}^1$

素因数の和:1650

約数の個数: 36

約数和(自身を含む): 35612460

約数和(自身を除く): 15137271

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1421, 1601, 1827, 4263, 4803, 11207, 12789, 14409, 33621, 46429, 78449, 100863, 139287, 235347, 325003, 417861, 706041, 975009, 2275021, 2925027, 6825063, 20475189]

約数ペア:

[(1, 20475189), (3, 6825063), (7, 2925027), (9, 2275021), (21, 975009), (29, 706041), (49, 417861), (63, 325003), (87, 235347), (147, 139287), (203, 100863), (261, 78449), (441, 46429), (609, 33621), (1421, 14409), (1601, 12789), (1827, 11207), (4263, 4803)]