20138020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20549}}^1$

素因数の和:20572

約数の個数: 36

約数和(自身を含む): 49196700

約数和(自身を除く): 29058680

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20549, 41098, 82196, 102745, 143843, 205490, 287686, 410980, 575372, 719215, 1006901, 1438430, 2013802, 2876860, 4027604, 5034505, 10069010, 20138020]

約数ペア:

[(1, 20138020), (2, 10069010), (4, 5034505), (5, 4027604), (7, 2876860), (10, 2013802), (14, 1438430), (20, 1006901), (28, 719215), (35, 575372), (49, 410980), (70, 287686), (98, 205490), (140, 143843), (196, 102745), (245, 82196), (490, 41098), (980, 20549)]