551247560

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{20849}}^1$

素因数の和:21521

約数の個数: 32

約数和(自身を含む): 1242243000

約数和(自身を除く): 690995440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2644, 3305, 5288, 6610, 13220, 20849, 26440, 41698, 83396, 104245, 166792, 208490, 416980, 833960, 13781189, 27562378, 55124756, 68905945, 110249512, 137811890, 275623780, 551247560]

約数ペア:

[(1, 551247560), (2, 275623780), (4, 137811890), (5, 110249512), (8, 68905945), (10, 55124756), (20, 27562378), (40, 13781189), (661, 833960), (1322, 416980), (2644, 208490), (3305, 166792), (5288, 104245), (6610, 83396), (13220, 41698), (20849, 26440)]