81957964

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{20929}}^1$

素因数の和:21033

約数の個数: 24

約数和(自身を含む): 158230800

約数和(自身を除く): 76272836

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 20929, 41858, 83716, 230219, 460438, 920876, 1862681, 3725362, 7450724, 20489491, 40978982, 81957964]

約数ペア:

[(1, 81957964), (2, 40978982), (4, 20489491), (11, 7450724), (22, 3725362), (44, 1862681), (89, 920876), (178, 460438), (356, 230219), (979, 83716), (1958, 41858), (3916, 20929)]