18720414387

素因数分解:

$3^4\times {\mathrm{347}}^1\times {\mathrm{666041}}^1$

素因数の和:666400

約数の個数: 20

約数和(自身を含む): 28045696536

約数和(自身を除く): 9325282149

約数列:

[1, 3, 9, 27, 81, 347, 1041, 3123, 9369, 28107, 666041, 1998123, 5994369, 17983107, 53949321, 231116227, 693348681, 2080046043, 6240138129, 18720414387]

約数ペア:

[(1, 18720414387), (3, 6240138129), (9, 2080046043), (27, 693348681), (81, 231116227), (347, 53949321), (1041, 17983107), (3123, 5994369), (9369, 1998123), (28107, 666041)]