20149640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71963}}^1$

素因数の和:71981

約数の個数: 32

約数和(自身を含む): 51814080

約数和(自身を除く): 31664440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71963, 143926, 287852, 359815, 503741, 575704, 719630, 1007482, 1439260, 2014964, 2518705, 2878520, 4029928, 5037410, 10074820, 20149640]

約数ペア:

[(1, 20149640), (2, 10074820), (4, 5037410), (5, 4029928), (7, 2878520), (8, 2518705), (10, 2014964), (14, 1439260), (20, 1007482), (28, 719630), (35, 575704), (40, 503741), (56, 359815), (70, 287852), (140, 143926), (280, 71963)]