18963891

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{317}}^1$

素因数の和:380

約数の個数: 36

約数和(自身を含む): 30459312

約数和(自身を除く): 11495421

約数列:

[1, 3, 9, 17, 23, 51, 69, 153, 207, 289, 317, 391, 867, 951, 1173, 2601, 2853, 3519, 5389, 6647, 7291, 16167, 19941, 21873, 48501, 59823, 65619, 91613, 123947, 274839, 371841, 824517, 1115523, 2107099, 6321297, 18963891]

約数ペア:

[(1, 18963891), (3, 6321297), (9, 2107099), (17, 1115523), (23, 824517), (51, 371841), (69, 274839), (153, 123947), (207, 91613), (289, 65619), (317, 59823), (391, 48501), (867, 21873), (951, 19941), (1173, 16167), (2601, 7291), (2853, 6647), (3519, 5389)]