21207256

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{8807}}^1$

素因数の和:8863

約数の個数: 32

約数和(自身を含む): 46506240

約数和(自身を除く): 25298984

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 86, 172, 301, 344, 602, 1204, 2408, 8807, 17614, 35228, 61649, 70456, 123298, 246596, 378701, 493192, 757402, 1514804, 2650907, 3029608, 5301814, 10603628, 21207256]

約数ペア:

[(1, 21207256), (2, 10603628), (4, 5301814), (7, 3029608), (8, 2650907), (14, 1514804), (28, 757402), (43, 493192), (56, 378701), (86, 246596), (172, 123298), (301, 70456), (344, 61649), (602, 35228), (1204, 17614), (2408, 8807)]