21649516

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{16451}}^1$

素因数の和:16509

約数の個数: 24

約数和(自身を含む): 44222976

約数和(自身を除く): 22573460

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 16451, 32902, 65804, 115157, 230314, 460628, 773197, 1546394, 3092788, 5412379, 10824758, 21649516]

約数ペア:

[(1, 21649516), (2, 10824758), (4, 5412379), (7, 3092788), (14, 1546394), (28, 773197), (47, 460628), (94, 230314), (188, 115157), (329, 65804), (658, 32902), (1316, 16451)]