18779867841

素因数分解:

$3^1\times 7^2\times {\mathrm{397}}^1\times {\mathrm{321799}}^1$

素因数の和:322213

約数の個数: 24

約数和(自身を含む): 29201419200

約数和(自身を除く): 10421551359

約数列:

[1, 3, 7, 21, 49, 147, 397, 1191, 2779, 8337, 19453, 58359, 321799, 965397, 2252593, 6757779, 15768151, 47304453, 127754203, 383262609, 894279421, 2682838263, 6259955947, 18779867841]

約数ペア:

[(1, 18779867841), (3, 6259955947), (7, 2682838263), (21, 894279421), (49, 383262609), (147, 127754203), (397, 47304453), (1191, 15768151), (2779, 6757779), (8337, 2252593), (19453, 965397), (58359, 321799)]