21800786

素因数分解:

$2^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{1493}}^1$

素因数の和:1658

約数の個数: 24

約数和(自身を含む): 38321100

約数和(自身を除く): 16520314

約数列:

[1, 2, 7, 14, 49, 98, 149, 298, 1043, 1493, 2086, 2986, 7301, 10451, 14602, 20902, 73157, 146314, 222457, 444914, 1557199, 3114398, 10900393, 21800786]

約数ペア:

[(1, 21800786), (2, 10900393), (7, 3114398), (14, 1557199), (49, 444914), (98, 222457), (149, 146314), (298, 73157), (1043, 20902), (1493, 14602), (2086, 10451), (2986, 7301)]