12871820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1597}}^1$

素因数の和:1650

約数の個数: 48

約数和(自身を含む): 30067968

約数和(自身を除く): 17196148

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1597, 1612, 2015, 3194, 4030, 6388, 7985, 8060, 15970, 20761, 31940, 41522, 49507, 83044, 99014, 103805, 198028, 207610, 247535, 415220, 495070, 643591, 990140, 1287182, 2574364, 3217955, 6435910, 12871820]

約数ペア:

[(1, 12871820), (2, 6435910), (4, 3217955), (5, 2574364), (10, 1287182), (13, 990140), (20, 643591), (26, 495070), (31, 415220), (52, 247535), (62, 207610), (65, 198028), (124, 103805), (130, 99014), (155, 83044), (260, 49507), (310, 41522), (403, 31940), (620, 20761), (806, 15970), (1597, 8060), (1612, 7985), (2015, 6388), (3194, 4030)]