42420020

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{15259}}^1$

素因数の和:15407

約数の個数: 24

約数和(自身を含む): 89728800

約数和(自身を除く): 47308780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 15259, 30518, 61036, 76295, 152590, 305180, 2121001, 4242002, 8484004, 10605005, 21210010, 42420020]

約数ペア:

[(1, 42420020), (2, 21210010), (4, 10605005), (5, 8484004), (10, 4242002), (20, 2121001), (139, 305180), (278, 152590), (556, 76295), (695, 61036), (1390, 30518), (2780, 15259)]