21378470

素因数分解:

$2^1\times 5^1\times {\mathrm{113}}^1\times {\mathrm{18919}}^1$

素因数の和:19039

約数の個数: 16

約数和(自身を含む): 38823840

約数和(自身を除く): 17445370

約数列:

[1, 2, 5, 10, 113, 226, 565, 1130, 18919, 37838, 94595, 189190, 2137847, 4275694, 10689235, 21378470]

約数ペア:

[(1, 21378470), (2, 10689235), (5, 4275694), (10, 2137847), (113, 189190), (226, 94595), (565, 37838), (1130, 18919)]