21731913

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{9323}}^1$

素因数の和:9373

約数の個数: 24

約数和(自身を含む): 36848448

約数和(自身を除く): 15116535

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 9323, 27969, 65261, 83907, 195783, 344951, 587349, 1034853, 2414657, 3104559, 7243971, 21731913]

約数ペア:

[(1, 21731913), (3, 7243971), (7, 3104559), (9, 2414657), (21, 1034853), (37, 587349), (63, 344951), (111, 195783), (259, 83907), (333, 65261), (777, 27969), (2331, 9323)]