19821179

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{491}}^1$

素因数の和:650

約数の個数: 16

約数和(自身を含む): 23301120

約数和(自身を除く): 3479941

約数列:

[1, 7, 73, 79, 491, 511, 553, 3437, 5767, 35843, 38789, 40369, 250901, 271523, 2831597, 19821179]

約数ペア:

[(1, 19821179), (7, 2831597), (73, 271523), (79, 250901), (491, 40369), (511, 38789), (553, 35843), (3437, 5767)]