21978178

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{10597}}^1$

素因数の和:10677

約数の個数: 16

約数和(自身を含む): 35482104

約数和(自身を除く): 13503926

約数列:

[1, 2, 17, 34, 61, 122, 1037, 2074, 10597, 21194, 180149, 360298, 646417, 1292834, 10989089, 21978178]

約数ペア:

[(1, 21978178), (2, 10989089), (17, 1292834), (34, 646417), (61, 360298), (122, 180149), (1037, 21194), (2074, 10597)]