20168204

素因数分解:

$2^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{2393}}^1$

素因数の和:2454

約数の個数: 36

約数和(自身を含む): 42029064

約数和(自身を除く): 21860860

約数列:

[1, 2, 4, 7, 14, 28, 43, 49, 86, 98, 172, 196, 301, 602, 1204, 2107, 2393, 4214, 4786, 8428, 9572, 16751, 33502, 67004, 102899, 117257, 205798, 234514, 411596, 469028, 720293, 1440586, 2881172, 5042051, 10084102, 20168204]

約数ペア:

[(1, 20168204), (2, 10084102), (4, 5042051), (7, 2881172), (14, 1440586), (28, 720293), (43, 469028), (49, 411596), (86, 234514), (98, 205798), (172, 117257), (196, 102899), (301, 67004), (602, 33502), (1204, 16751), (2107, 9572), (2393, 8428), (4214, 4786)]