21148520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27827}}^1$

素因数の和:27857

約数の個数: 32

約数和(自身を含む): 50090400

約数和(自身を除く): 28941880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27827, 55654, 111308, 139135, 222616, 278270, 528713, 556540, 1057426, 1113080, 2114852, 2643565, 4229704, 5287130, 10574260, 21148520]

約数ペア:

[(1, 21148520), (2, 10574260), (4, 5287130), (5, 4229704), (8, 2643565), (10, 2114852), (19, 1113080), (20, 1057426), (38, 556540), (40, 528713), (76, 278270), (95, 222616), (152, 139135), (190, 111308), (380, 55654), (760, 27827)]