39991810

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{947}}^1$

素因数の和:1098

約数の個数: 32

約数和(自身を含む): 74535552

約数和(自身を除く): 34543742

約数列:

[1, 2, 5, 10, 41, 82, 103, 205, 206, 410, 515, 947, 1030, 1894, 4223, 4735, 8446, 9470, 21115, 38827, 42230, 77654, 97541, 194135, 195082, 388270, 487705, 975410, 3999181, 7998362, 19995905, 39991810]

約数ペア:

[(1, 39991810), (2, 19995905), (5, 7998362), (10, 3999181), (41, 975410), (82, 487705), (103, 388270), (205, 195082), (206, 194135), (410, 97541), (515, 77654), (947, 42230), (1030, 38827), (1894, 21115), (4223, 9470), (4735, 8446)]