20988374

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41479}}^1$

素因数の和:41515

約数の個数: 16

約数和(自身を含む): 35838720

約数和(自身を除く): 14850346

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 41479, 82958, 456269, 912538, 954017, 1908034, 10494187, 20988374]

約数ペア:

[(1, 20988374), (2, 10494187), (11, 1908034), (22, 954017), (23, 912538), (46, 456269), (253, 82958), (506, 41479)]