21123802

素因数分解:

$2^1\times 7^2\times {\mathrm{439}}^1\times {\mathrm{491}}^1$

素因数の和:946

約数の個数: 24

約数和(自身を含む): 37018080

約数和(自身を除く): 15894278

約数列:

[1, 2, 7, 14, 49, 98, 439, 491, 878, 982, 3073, 3437, 6146, 6874, 21511, 24059, 43022, 48118, 215549, 431098, 1508843, 3017686, 10561901, 21123802]

約数ペア:

[(1, 21123802), (2, 10561901), (7, 3017686), (14, 1508843), (49, 431098), (98, 215549), (439, 48118), (491, 43022), (878, 24059), (982, 21511), (3073, 6874), (3437, 6146)]