18746871

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:607

約数の個数: 32

約数和(自身を含む): 29756160

約数和(自身を除く): 11009289

約数列:

[1, 3, 11, 13, 33, 39, 89, 143, 267, 429, 491, 979, 1157, 1473, 2937, 3471, 5401, 6383, 12727, 16203, 19149, 38181, 43699, 70213, 131097, 210639, 480689, 568087, 1442067, 1704261, 6248957, 18746871]

約数ペア:

[(1, 18746871), (3, 6248957), (11, 1704261), (13, 1442067), (33, 568087), (39, 480689), (89, 210639), (143, 131097), (267, 70213), (429, 43699), (491, 38181), (979, 19149), (1157, 16203), (1473, 12727), (2937, 6383), (3471, 5401)]