20398220

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4493}}^1$

素因数の和:4729

約数の個数: 24

約数和(自身を含む): 43034544

約数和(自身を除く): 22636324

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4493, 4540, 8986, 17972, 22465, 44930, 89860, 1019911, 2039822, 4079644, 5099555, 10199110, 20398220]

約数ペア:

[(1, 20398220), (2, 10199110), (4, 5099555), (5, 4079644), (10, 2039822), (20, 1019911), (227, 89860), (454, 44930), (908, 22465), (1135, 17972), (2270, 8986), (4493, 4540)]