18513513

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{797}}^1$

素因数の和:921

約数の個数: 24

約数和(自身を含む): 28009800

約数和(自身を除く): 9496287

約数列:

[1, 3, 9, 29, 87, 89, 261, 267, 797, 801, 2391, 2581, 7173, 7743, 23113, 23229, 69339, 70933, 208017, 212799, 638397, 2057057, 6171171, 18513513]

約数ペア:

[(1, 18513513), (3, 6171171), (9, 2057057), (29, 638397), (87, 212799), (89, 208017), (261, 70933), (267, 69339), (797, 23229), (801, 23113), (2391, 7743), (2581, 7173)]