15520240

素因数分解:

$2^4\times 5^1\times {\mathrm{194003}}^1$

素因数の和:194016

約数の個数: 20

約数和(自身を含む): 36084744

約数和(自身を除く): 20564504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 194003, 388006, 776012, 970015, 1552024, 1940030, 3104048, 3880060, 7760120, 15520240]

約数ペア:

[(1, 15520240), (2, 7760120), (4, 3880060), (5, 3104048), (8, 1940030), (10, 1552024), (16, 970015), (20, 776012), (40, 388006), (80, 194003)]