638671209

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{217457}}^1$

素因数の和:217560

約数の個数: 16

約数和(自身を含む): 939418560

約数和(自身を除く): 300747351

約数列:

[1, 3, 11, 33, 89, 267, 979, 2937, 217457, 652371, 2392027, 7176081, 19353673, 58061019, 212890403, 638671209]

約数ペア:

[(1, 638671209), (3, 212890403), (11, 58061019), (33, 19353673), (89, 7176081), (267, 2392027), (979, 652371), (2937, 217457)]