649648

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{2137}}^1$

素因数の和:2164

約数の個数: 20

約数和(自身を含む): 1325560

約数和(自身を除く): 675912

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 2137, 4274, 8548, 17096, 34192, 40603, 81206, 162412, 324824, 649648]

約数ペア:

[(1, 649648), (2, 324824), (4, 162412), (8, 81206), (16, 40603), (19, 34192), (38, 17096), (76, 8548), (152, 4274), (304, 2137)]