81620960

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{26849}}^1$

素因数の和:26883

約数の個数: 48

約数和(自身を含む): 202986000

約数和(自身を除く): 121365040

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 26849, 53698, 107396, 134245, 214792, 268490, 429584, 510131, 536980, 859168, 1020262, 1073960, 2040524, 2147920, 2550655, 4081048, 4295840, 5101310, 8162096, 10202620, 16324192, 20405240, 40810480, 81620960]

約数ペア:

[(1, 81620960), (2, 40810480), (4, 20405240), (5, 16324192), (8, 10202620), (10, 8162096), (16, 5101310), (19, 4295840), (20, 4081048), (32, 2550655), (38, 2147920), (40, 2040524), (76, 1073960), (80, 1020262), (95, 859168), (152, 536980), (160, 510131), (190, 429584), (304, 268490), (380, 214792), (608, 134245), (760, 107396), (1520, 53698), (3040, 26849)]