20357870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{1051}}^1$

素因数の和:1220

約数の個数: 32

約数和(自身を含む): 39765600

約数和(自身を除く): 19407730

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 149, 298, 745, 1051, 1490, 1937, 2102, 3874, 5255, 9685, 10510, 13663, 19370, 27326, 68315, 136630, 156599, 313198, 782995, 1565990, 2035787, 4071574, 10178935, 20357870]

約数ペア:

[(1, 20357870), (2, 10178935), (5, 4071574), (10, 2035787), (13, 1565990), (26, 782995), (65, 313198), (130, 156599), (149, 136630), (298, 68315), (745, 27326), (1051, 19370), (1490, 13663), (1937, 10510), (2102, 9685), (3874, 5255)]