20475015

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{389}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 37346400

約数和(自身を除く): 16871385

約数列:

[1, 3, 5, 11, 15, 29, 33, 55, 87, 121, 145, 165, 319, 363, 389, 435, 605, 957, 1167, 1595, 1815, 1945, 3509, 4279, 4785, 5835, 10527, 11281, 12837, 17545, 21395, 33843, 47069, 52635, 56405, 64185, 124091, 141207, 169215, 235345, 372273, 620455, 706035, 1365001, 1861365, 4095003, 6825005, 20475015]

約数ペア:

[(1, 20475015), (3, 6825005), (5, 4095003), (11, 1861365), (15, 1365001), (29, 706035), (33, 620455), (55, 372273), (87, 235345), (121, 169215), (145, 141207), (165, 124091), (319, 64185), (363, 56405), (389, 52635), (435, 47069), (605, 33843), (957, 21395), (1167, 17545), (1595, 12837), (1815, 11281), (1945, 10527), (3509, 5835), (4279, 4785)]