21031965

素因数分解:

$3^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2447}}^1$

素因数の和:2649

約数の個数: 24

約数和(自身を含む): 36661248

約数和(自身を除く): 15629283

約数列:

[1, 3, 5, 9, 15, 45, 191, 573, 955, 1719, 2447, 2865, 7341, 8595, 12235, 22023, 36705, 110115, 467377, 1402131, 2336885, 4206393, 7010655, 21031965]

約数ペア:

[(1, 21031965), (3, 7010655), (5, 4206393), (9, 2336885), (15, 1402131), (45, 467377), (191, 110115), (573, 36705), (955, 22023), (1719, 12235), (2447, 8595), (2865, 7341)]