20001261

素因数分解:

$3^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{1321}}^1$

素因数の和:1441

約数の個数: 24

約数和(自身を含む): 31347264

約数和(自身を除く): 11346003

約数列:

[1, 3, 7, 21, 49, 103, 147, 309, 721, 1321, 2163, 3963, 5047, 9247, 15141, 27741, 64729, 136063, 194187, 408189, 952441, 2857323, 6667087, 20001261]

約数ペア:

[(1, 20001261), (3, 6667087), (7, 2857323), (21, 952441), (49, 408189), (103, 194187), (147, 136063), (309, 64729), (721, 27741), (1321, 15141), (2163, 9247), (3963, 5047)]