51487280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1597}}^1$

素因数の和:1654

約数の個数: 80

約数和(自身を含む): 133158144

約数和(自身を除く): 81670864

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1597, 1612, 2015, 2480, 3194, 3224, 4030, 6388, 6448, 7985, 8060, 12776, 15970, 16120, 20761, 25552, 31940, 32240, 41522, 49507, 63880, 83044, 99014, 103805, 127760, 166088, 198028, 207610, 247535, 332176, 396056, 415220, 495070, 643591, 792112, 830440, 990140, 1287182, 1660880, 1980280, 2574364, 3217955, 3960560, 5148728, 6435910, 10297456, 12871820, 25743640, 51487280]

約数ペア:

[(1, 51487280), (2, 25743640), (4, 12871820), (5, 10297456), (8, 6435910), (10, 5148728), (13, 3960560), (16, 3217955), (20, 2574364), (26, 1980280), (31, 1660880), (40, 1287182), (52, 990140), (62, 830440), (65, 792112), (80, 643591), (104, 495070), (124, 415220), (130, 396056), (155, 332176), (208, 247535), (248, 207610), (260, 198028), (310, 166088), (403, 127760), (496, 103805), (520, 99014), (620, 83044), (806, 63880), (1040, 49507), (1240, 41522), (1597, 32240), (1612, 31940), (2015, 25552), (2480, 20761), (3194, 16120), (3224, 15970), (4030, 12776), (6388, 8060), (6448, 7985)]