21000388707

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1\times {\mathrm{2663}}^1$

素因数の和:3000

約数の個数: 48

約数和(自身を含む): 31464695808

約数和(自身を除く): 10464307101

約数列:

[1, 3, 9, 47, 103, 141, 181, 309, 423, 543, 927, 1629, 2663, 4841, 7989, 8507, 14523, 18643, 23967, 25521, 43569, 55929, 76563, 125161, 167787, 274289, 375483, 482003, 822867, 876221, 1126449, 1446009, 2468601, 2628663, 4338027, 7885989, 12891583, 22654141, 38674749, 49646309, 67962423, 116024247, 148938927, 203887269, 446816781, 2333376523, 7000129569, 21000388707]

約数ペア:

[(1, 21000388707), (3, 7000129569), (9, 2333376523), (47, 446816781), (103, 203887269), (141, 148938927), (181, 116024247), (309, 67962423), (423, 49646309), (543, 38674749), (927, 22654141), (1629, 12891583), (2663, 7885989), (4841, 4338027), (7989, 2628663), (8507, 2468601), (14523, 1446009), (18643, 1126449), (23967, 876221), (25521, 822867), (43569, 482003), (55929, 375483), (76563, 274289), (125161, 167787)]