21374151

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1\times {\mathrm{277}}^1$

素因数の和:403

約数の個数: 24

約数和(自身を含む): 30724560

約数和(自身を除く): 9350409

約数列:

[1, 3, 17, 51, 89, 267, 277, 289, 831, 867, 1513, 4539, 4709, 14127, 24653, 25721, 73959, 77163, 80053, 240159, 419101, 1257303, 7124717, 21374151]

約数ペア:

[(1, 21374151), (3, 7124717), (17, 1257303), (51, 419101), (89, 240159), (267, 80053), (277, 77163), (289, 73959), (831, 25721), (867, 24653), (1513, 14127), (4539, 4709)]