21571480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77041}}^1$

素因数の和:77059

約数の個数: 32

約数和(自身を含む): 55470240

約数和(自身を除く): 33898760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77041, 154082, 308164, 385205, 539287, 616328, 770410, 1078574, 1540820, 2157148, 2696435, 3081640, 4314296, 5392870, 10785740, 21571480]

約数ペア:

[(1, 21571480), (2, 10785740), (4, 5392870), (5, 4314296), (7, 3081640), (8, 2696435), (10, 2157148), (14, 1540820), (20, 1078574), (28, 770410), (35, 616328), (40, 539287), (56, 385205), (70, 308164), (140, 154082), (280, 77041)]