21704358

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{278261}}^1$

素因数の和:278279

約数の個数: 16

約数和(自身を含む): 46748016

約数和(自身を除く): 25043658

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 278261, 556522, 834783, 1669566, 3617393, 7234786, 10852179, 21704358]

約数ペア:

[(1, 21704358), (2, 10852179), (3, 7234786), (6, 3617393), (13, 1669566), (26, 834783), (39, 556522), (78, 278261)]