21239718

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{153911}}^1$

素因数の和:153939

約数の個数: 16

約数和(自身を含む): 44326656

約数和(自身を除く): 23086938

約数列:

[1, 2, 3, 6, 23, 46, 69, 138, 153911, 307822, 461733, 923466, 3539953, 7079906, 10619859, 21239718]

約数ペア:

[(1, 21239718), (2, 10619859), (3, 7079906), (6, 3539953), (23, 923466), (46, 461733), (69, 307822), (138, 153911)]