20798481

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 31749120

約数和(自身を除く): 10950639

約数列:

[1, 3, 11, 29, 33, 87, 103, 211, 309, 319, 633, 957, 1133, 2321, 2987, 3399, 6119, 6963, 8961, 18357, 21733, 32857, 65199, 67309, 98571, 201927, 239063, 630257, 717189, 1890771, 6932827, 20798481]

約数ペア:

[(1, 20798481), (3, 6932827), (11, 1890771), (29, 717189), (33, 630257), (87, 239063), (103, 201927), (211, 98571), (309, 67309), (319, 65199), (633, 32857), (957, 21733), (1133, 18357), (2321, 8961), (2987, 6963), (3399, 6119)]