21158445

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2617}}^1$

素因数の和:2650

約数の個数: 48

約数和(自身を含む): 42977088

約数和(自身を除く): 21818643

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 385, 539, 735, 1155, 1617, 2617, 2695, 7851, 8085, 13085, 18319, 28787, 39255, 54957, 86361, 91595, 128233, 143935, 201509, 274785, 384699, 431805, 604527, 641165, 1007545, 1410563, 1923495, 3022635, 4231689, 7052815, 21158445]

約数ペア:

[(1, 21158445), (3, 7052815), (5, 4231689), (7, 3022635), (11, 1923495), (15, 1410563), (21, 1007545), (33, 641165), (35, 604527), (49, 431805), (55, 384699), (77, 274785), (105, 201509), (147, 143935), (165, 128233), (231, 91595), (245, 86361), (385, 54957), (539, 39255), (735, 28787), (1155, 18319), (1617, 13085), (2617, 8085), (2695, 7851)]