20355940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1381}}^1$

素因数の和:1468

約数の個数: 48

約数和(自身を含む): 47363904

約数和(自身を除く): 27007964

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 110, 134, 220, 268, 335, 670, 737, 1340, 1381, 1474, 2762, 2948, 3685, 5524, 6905, 7370, 13810, 14740, 15191, 27620, 30382, 60764, 75955, 92527, 151910, 185054, 303820, 370108, 462635, 925270, 1017797, 1850540, 2035594, 4071188, 5088985, 10177970, 20355940]

約数ペア:

[(1, 20355940), (2, 10177970), (4, 5088985), (5, 4071188), (10, 2035594), (11, 1850540), (20, 1017797), (22, 925270), (44, 462635), (55, 370108), (67, 303820), (110, 185054), (134, 151910), (220, 92527), (268, 75955), (335, 60764), (670, 30382), (737, 27620), (1340, 15191), (1381, 14740), (1474, 13810), (2762, 7370), (2948, 6905), (3685, 5524)]