21372681

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{971}}^1$

素因数の和:1037

約数の個数: 32

約数和(自身を含む): 33592320

約数和(自身を除く): 12219639

約数列:

[1, 3, 11, 23, 29, 33, 69, 87, 253, 319, 667, 759, 957, 971, 2001, 2913, 7337, 10681, 22011, 22333, 28159, 32043, 66999, 84477, 245663, 309749, 647657, 736989, 929247, 1942971, 7124227, 21372681]

約数ペア:

[(1, 21372681), (3, 7124227), (11, 1942971), (23, 929247), (29, 736989), (33, 647657), (69, 309749), (87, 245663), (253, 84477), (319, 66999), (667, 32043), (759, 28159), (957, 22333), (971, 22011), (2001, 10681), (2913, 7337)]