21947415

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4861}}^1$

素因数の和:4919

約数の個数: 32

約数和(自身を含む): 41074176

約数和(自身を除く): 19126761

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 105, 129, 215, 301, 645, 903, 1505, 4515, 4861, 14583, 24305, 34027, 72915, 102081, 170135, 209023, 510405, 627069, 1045115, 1463161, 3135345, 4389483, 7315805, 21947415]

約数ペア:

[(1, 21947415), (3, 7315805), (5, 4389483), (7, 3135345), (15, 1463161), (21, 1045115), (35, 627069), (43, 510405), (105, 209023), (129, 170135), (215, 102081), (301, 72915), (645, 34027), (903, 24305), (1505, 14583), (4515, 4861)]