21581091

素因数分解:

$3^2\times 7^1\times {\mathrm{509}}^1\times {\mathrm{673}}^1$

素因数の和:1195

約数の個数: 24

約数和(自身を含む): 35748960

約数和(自身を除く): 14167869

約数列:

[1, 3, 7, 9, 21, 63, 509, 673, 1527, 2019, 3563, 4581, 4711, 6057, 10689, 14133, 32067, 42399, 342557, 1027671, 2397899, 3083013, 7193697, 21581091]

約数ペア:

[(1, 21581091), (3, 7193697), (7, 3083013), (9, 2397899), (21, 1027671), (63, 342557), (509, 42399), (673, 32067), (1527, 14133), (2019, 10689), (3563, 6057), (4581, 4711)]