19977160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71347}}^1$

素因数の和:71365

約数の個数: 32

約数和(自身を含む): 51370560

約数和(自身を除く): 31393400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71347, 142694, 285388, 356735, 499429, 570776, 713470, 998858, 1426940, 1997716, 2497145, 2853880, 3995432, 4994290, 9988580, 19977160]

約数ペア:

[(1, 19977160), (2, 9988580), (4, 4994290), (5, 3995432), (7, 2853880), (8, 2497145), (10, 1997716), (14, 1426940), (20, 998858), (28, 713470), (35, 570776), (40, 499429), (56, 356735), (70, 285388), (140, 142694), (280, 71347)]