20428198

素因数分解:

$2^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{1399}}^1$

素因数の和:1564

約数の個数: 24

約数和(自身を含む): 35910000

約数和(自身を除く): 15481802

約数列:

[1, 2, 7, 14, 49, 98, 149, 298, 1043, 1399, 2086, 2798, 7301, 9793, 14602, 19586, 68551, 137102, 208451, 416902, 1459157, 2918314, 10214099, 20428198]

約数ペア:

[(1, 20428198), (2, 10214099), (7, 2918314), (14, 1459157), (49, 416902), (98, 208451), (149, 137102), (298, 68551), (1043, 19586), (1399, 14602), (2086, 9793), (2798, 7301)]