18998877

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:309

約数の個数: 32

約数和(自身を含む): 28283904

約数和(自身を除く): 9285027

約数列:

[1, 3, 17, 31, 51, 61, 93, 183, 197, 527, 591, 1037, 1581, 1891, 3111, 3349, 5673, 6107, 10047, 12017, 18321, 32147, 36051, 96441, 103819, 204289, 311457, 372527, 612867, 1117581, 6332959, 18998877]

約数ペア:

[(1, 18998877), (3, 6332959), (17, 1117581), (31, 612867), (51, 372527), (61, 311457), (93, 204289), (183, 103819), (197, 96441), (527, 36051), (591, 32147), (1037, 18321), (1581, 12017), (1891, 10047), (3111, 6107), (3349, 5673)]