21541639

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{1997}}^1$

素因数の和:2094

約数の個数: 16

約数和(自身を含む): 26085888

約数和(自身を除く): 4544249

約数列:

[1, 7, 23, 67, 161, 469, 1541, 1997, 10787, 13979, 45931, 133799, 321517, 936593, 3077377, 21541639]

約数ペア:

[(1, 21541639), (7, 3077377), (23, 936593), (67, 321517), (161, 133799), (469, 45931), (1541, 13979), (1997, 10787)]