18378909

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4673}}^1$

素因数の和:4721

約数の個数: 24

約数和(自身を含む): 29165760

約数和(自身を除く): 10786851

約数列:

[1, 3, 9, 19, 23, 57, 69, 171, 207, 437, 1311, 3933, 4673, 14019, 42057, 88787, 107479, 266361, 322437, 799083, 967311, 2042101, 6126303, 18378909]

約数ペア:

[(1, 18378909), (3, 6126303), (9, 2042101), (19, 967311), (23, 799083), (57, 322437), (69, 266361), (171, 107479), (207, 88787), (437, 42057), (1311, 14019), (3933, 4673)]