287355460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{28909}}^1$

素因数の和:28996

約数の個数: 48

約数和(自身を含む): 699390720

約数和(自身を除く): 412035260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 28909, 57818, 115636, 144545, 202363, 289090, 404726, 578180, 809452, 1011815, 2023630, 2052539, 4047260, 4105078, 8210156, 10262695, 14367773, 20525390, 28735546, 41050780, 57471092, 71838865, 143677730, 287355460]

約数ペア:

[(1, 287355460), (2, 143677730), (4, 71838865), (5, 57471092), (7, 41050780), (10, 28735546), (14, 20525390), (20, 14367773), (28, 10262695), (35, 8210156), (70, 4105078), (71, 4047260), (140, 2052539), (142, 2023630), (284, 1011815), (355, 809452), (497, 578180), (710, 404726), (994, 289090), (1420, 202363), (1988, 144545), (2485, 115636), (4970, 57818), (9940, 28909)]