20510140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3407}}^1$

素因数の和:3466

約数の個数: 48

約数和(自身を含む): 50383872

約数和(自身を除く): 29873732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 3407, 6020, 6814, 13628, 17035, 23849, 34070, 47698, 68140, 95396, 119245, 146501, 238490, 293002, 476980, 586004, 732505, 1025507, 1465010, 2051014, 2930020, 4102028, 5127535, 10255070, 20510140]

約数ペア:

[(1, 20510140), (2, 10255070), (4, 5127535), (5, 4102028), (7, 2930020), (10, 2051014), (14, 1465010), (20, 1025507), (28, 732505), (35, 586004), (43, 476980), (70, 293002), (86, 238490), (140, 146501), (172, 119245), (215, 95396), (301, 68140), (430, 47698), (602, 34070), (860, 23849), (1204, 17035), (1505, 13628), (3010, 6814), (3407, 6020)]