15980240

素因数分解:

$2^4\times 5^1\times {\mathrm{199753}}^1$

素因数の和:199766

約数の個数: 20

約数和(自身を含む): 37154244

約数和(自身を除く): 21174004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199753, 399506, 799012, 998765, 1598024, 1997530, 3196048, 3995060, 7990120, 15980240]

約数ペア:

[(1, 15980240), (2, 7990120), (4, 3995060), (5, 3196048), (8, 1997530), (10, 1598024), (16, 998765), (20, 799012), (40, 399506), (80, 199753)]