27978020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{28549}}^1$

素因数の和:28572

約数の個数: 36

約数和(自身を含む): 68348700

約数和(自身を除く): 40370680

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 28549, 57098, 114196, 142745, 199843, 285490, 399686, 570980, 799372, 999215, 1398901, 1998430, 2797802, 3996860, 5595604, 6994505, 13989010, 27978020]

約数ペア:

[(1, 27978020), (2, 13989010), (4, 6994505), (5, 5595604), (7, 3996860), (10, 2797802), (14, 1998430), (20, 1398901), (28, 999215), (35, 799372), (49, 570980), (70, 399686), (98, 285490), (140, 199843), (196, 142745), (245, 114196), (490, 57098), (980, 28549)]