278319821

素因数分解:

${\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{293}}^1\times {\mathrm{821}}^1$

素因数の和:1216

約数の個数: 16

約数和(自身を含む): 304501680

約数和(自身を除く): 26181859

約数列:

[1, 13, 89, 293, 821, 1157, 3809, 10673, 26077, 73069, 240553, 339001, 949897, 3127189, 21409217, 278319821]

約数ペア:

[(1, 278319821), (13, 21409217), (89, 3127189), (293, 949897), (821, 339001), (1157, 240553), (3809, 73069), (10673, 26077)]