21127804

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{1979}}^1$

素因数の和:2157

約数の個数: 24

約数和(自身を含む): 39417840

約数和(自身を除く): 18290036

約数列:

[1, 2, 4, 17, 34, 68, 157, 314, 628, 1979, 2669, 3958, 5338, 7916, 10676, 33643, 67286, 134572, 310703, 621406, 1242812, 5281951, 10563902, 21127804]

約数ペア:

[(1, 21127804), (2, 10563902), (4, 5281951), (17, 1242812), (34, 621406), (68, 310703), (157, 134572), (314, 67286), (628, 33643), (1979, 10676), (2669, 7916), (3958, 5338)]