15966640

素因数分解:

$2^4\times 5^1\times {\mathrm{199583}}^1$

素因数の和:199596

約数の個数: 20

約数和(自身を含む): 37122624

約数和(自身を除く): 21155984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199583, 399166, 798332, 997915, 1596664, 1995830, 3193328, 3991660, 7983320, 15966640]

約数ペア:

[(1, 15966640), (2, 7983320), (4, 3991660), (5, 3193328), (8, 1995830), (10, 1596664), (16, 997915), (20, 798332), (40, 399166), (80, 199583)]