80898020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{82549}}^1$

素因数の和:82572

約数の個数: 36

約数和(自身を含む): 197624700

約数和(自身を除く): 116726680

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 82549, 165098, 330196, 412745, 577843, 825490, 1155686, 1650980, 2311372, 2889215, 4044901, 5778430, 8089802, 11556860, 16179604, 20224505, 40449010, 80898020]

約数ペア:

[(1, 80898020), (2, 40449010), (4, 20224505), (5, 16179604), (7, 11556860), (10, 8089802), (14, 5778430), (20, 4044901), (28, 2889215), (35, 2311372), (49, 1650980), (70, 1155686), (98, 825490), (140, 577843), (196, 412745), (245, 330196), (490, 165098), (980, 82549)]