18694917

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 30888000

約数和(自身を除く): 12193083

約数列:

[1, 3, 9, 17, 19, 51, 57, 59, 109, 153, 171, 177, 323, 327, 531, 969, 981, 1003, 1121, 1853, 2071, 2907, 3009, 3363, 5559, 6213, 6431, 9027, 10089, 16677, 18639, 19057, 19293, 35207, 57171, 57879, 105621, 109327, 122189, 171513, 316863, 327981, 366567, 983943, 1099701, 2077213, 6231639, 18694917]

約数ペア:

[(1, 18694917), (3, 6231639), (9, 2077213), (17, 1099701), (19, 983943), (51, 366567), (57, 327981), (59, 316863), (109, 171513), (153, 122189), (171, 109327), (177, 105621), (323, 57879), (327, 57171), (531, 35207), (969, 19293), (981, 19057), (1003, 18639), (1121, 16677), (1853, 10089), (2071, 9027), (2907, 6431), (3009, 6213), (3363, 5559)]