20091489

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{257}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 30910464

約数和(自身を除く): 10818975

約数列:

[1, 3, 11, 23, 33, 69, 103, 253, 257, 309, 759, 771, 1133, 2369, 2827, 3399, 5911, 7107, 8481, 17733, 26059, 26471, 65021, 78177, 79413, 195063, 291181, 608833, 873543, 1826499, 6697163, 20091489]

約数ペア:

[(1, 20091489), (3, 6697163), (11, 1826499), (23, 873543), (33, 608833), (69, 291181), (103, 195063), (253, 79413), (257, 78177), (309, 65021), (759, 26471), (771, 26059), (1133, 17733), (2369, 8481), (2827, 7107), (3399, 5911)]