21004394

素因数分解:

$2^1\times {\mathrm{47}}^1\times {\mathrm{439}}^1\times {\mathrm{509}}^1$

素因数の和:997

約数の個数: 16

約数和(自身を含む): 32313600

約数和(自身を除く): 11309206

約数列:

[1, 2, 47, 94, 439, 509, 878, 1018, 20633, 23923, 41266, 47846, 223451, 446902, 10502197, 21004394]

約数ペア:

[(1, 21004394), (2, 10502197), (47, 446902), (94, 223451), (439, 47846), (509, 41266), (878, 23923), (1018, 20633)]