21015568

素因数分解:

$2^4\times 7^1\times {\mathrm{187639}}^1$

素因数の和:187654

約数の個数: 20

約数和(自身を含む): 46534720

約数和(自身を除く): 25519152

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 187639, 375278, 750556, 1313473, 1501112, 2626946, 3002224, 5253892, 10507784, 21015568]

約数ペア:

[(1, 21015568), (2, 10507784), (4, 5253892), (7, 3002224), (8, 2626946), (14, 1501112), (16, 1313473), (28, 750556), (56, 375278), (112, 187639)]