19913299

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{389}}^1$

素因数の和:570

約数の個数: 16

約数和(自身を含む): 23362560

約数和(自身を除く): 3449261

約数列:

[1, 7, 71, 103, 389, 497, 721, 2723, 7313, 27619, 40067, 51191, 193333, 280469, 2844757, 19913299]

約数ペア:

[(1, 19913299), (7, 2844757), (71, 280469), (103, 193333), (389, 51191), (497, 40067), (721, 27619), (2723, 7313)]