638615740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{41849}}^1$

素因数の和:41974

約数の個数: 48

約数和(自身を含む): 1546776000

約数和(自身を除く): 908160260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1526, 2180, 3052, 3815, 7630, 15260, 41849, 83698, 167396, 209245, 292943, 418490, 585886, 836980, 1171772, 1464715, 2929430, 4561541, 5858860, 9123082, 18246164, 22807705, 31930787, 45615410, 63861574, 91230820, 127723148, 159653935, 319307870, 638615740]

約数ペア:

[(1, 638615740), (2, 319307870), (4, 159653935), (5, 127723148), (7, 91230820), (10, 63861574), (14, 45615410), (20, 31930787), (28, 22807705), (35, 18246164), (70, 9123082), (109, 5858860), (140, 4561541), (218, 2929430), (436, 1464715), (545, 1171772), (763, 836980), (1090, 585886), (1526, 418490), (2180, 292943), (3052, 209245), (3815, 167396), (7630, 83698), (15260, 41849)]