18109899

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:197

約数の個数: 40

約数和(自身を含む): 28435968

約数和(自身を除く): 10326069

約数列:

[1, 3, 9, 27, 47, 67, 71, 81, 141, 201, 213, 423, 603, 639, 1269, 1809, 1917, 3149, 3337, 3807, 4757, 5427, 5751, 9447, 10011, 14271, 28341, 30033, 42813, 85023, 90099, 128439, 223579, 255069, 270297, 385317, 670737, 2012211, 6036633, 18109899]

約数ペア:

[(1, 18109899), (3, 6036633), (9, 2012211), (27, 670737), (47, 385317), (67, 270297), (71, 255069), (81, 223579), (141, 128439), (201, 90099), (213, 85023), (423, 42813), (603, 30033), (639, 28341), (1269, 14271), (1809, 10011), (1917, 9447), (3149, 5751), (3337, 5427), (3807, 4757)]