19556220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{821}}^1$

素因数の和:1230

約数の個数: 48

約数和(自身を含む): 54962208

約数和(自身を除く): 35405988

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 397, 794, 821, 1191, 1588, 1642, 1985, 2382, 2463, 3284, 3970, 4105, 4764, 4926, 5955, 7940, 8210, 9852, 11910, 12315, 16420, 23820, 24630, 49260, 325937, 651874, 977811, 1303748, 1629685, 1955622, 3259370, 3911244, 4889055, 6518740, 9778110, 19556220]

約数ペア:

[(1, 19556220), (2, 9778110), (3, 6518740), (4, 4889055), (5, 3911244), (6, 3259370), (10, 1955622), (12, 1629685), (15, 1303748), (20, 977811), (30, 651874), (60, 325937), (397, 49260), (794, 24630), (821, 23820), (1191, 16420), (1588, 12315), (1642, 11910), (1985, 9852), (2382, 8210), (2463, 7940), (3284, 5955), (3970, 4926), (4105, 4764)]