16990015

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2237}}^1$

素因数の和:2287

約数の個数: 24

約数和(自身を含む): 24492672

約数和(自身を除く): 7502657

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 2237, 7595, 11185, 15659, 69347, 78295, 109613, 346735, 485429, 548065, 2427145, 3398003, 16990015]

約数ペア:

[(1, 16990015), (5, 3398003), (7, 2427145), (31, 548065), (35, 485429), (49, 346735), (155, 109613), (217, 78295), (245, 69347), (1085, 15659), (1519, 11185), (2237, 7595)]