39997220

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{3929}}^1$

素因数の和:4447

約数の個数: 24

約数和(自身を含む): 84180600

約数和(自身を除く): 44183380

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 2036, 2545, 3929, 5090, 7858, 10180, 15716, 19645, 39290, 78580, 1999861, 3999722, 7999444, 9999305, 19998610, 39997220]

約数ペア:

[(1, 39997220), (2, 19998610), (4, 9999305), (5, 7999444), (10, 3999722), (20, 1999861), (509, 78580), (1018, 39290), (2036, 19645), (2545, 15716), (3929, 10180), (5090, 7858)]