20912451

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1493}}^1$

素因数の和:1555

約数の個数: 32

約数和(自身を含む): 34421760

約数和(自身を除く): 13509309

約数列:

[1, 3, 7, 21, 23, 29, 69, 87, 161, 203, 483, 609, 667, 1493, 2001, 4479, 4669, 10451, 14007, 31353, 34339, 43297, 103017, 129891, 240373, 303079, 721119, 909237, 995831, 2987493, 6970817, 20912451]

約数ペア:

[(1, 20912451), (3, 6970817), (7, 2987493), (21, 995831), (23, 909237), (29, 721119), (69, 303079), (87, 240373), (161, 129891), (203, 103017), (483, 43297), (609, 34339), (667, 31353), (1493, 14007), (2001, 10451), (4479, 4669)]