20507480

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10463}}^1$

素因数の和:10488

約数の個数: 48

約数和(自身を含む): 53680320

約数和(自身を除く): 33172840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10463, 20926, 41852, 52315, 73241, 83704, 104630, 146482, 209260, 292964, 366205, 418520, 512687, 585928, 732410, 1025374, 1464820, 2050748, 2563435, 2929640, 4101496, 5126870, 10253740, 20507480]

約数ペア:

[(1, 20507480), (2, 10253740), (4, 5126870), (5, 4101496), (7, 2929640), (8, 2563435), (10, 2050748), (14, 1464820), (20, 1025374), (28, 732410), (35, 585928), (40, 512687), (49, 418520), (56, 366205), (70, 292964), (98, 209260), (140, 146482), (196, 104630), (245, 83704), (280, 73241), (392, 52315), (490, 41852), (980, 20926), (1960, 10463)]