25743640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1597}}^1$

素因数の和:1652

約数の個数: 64

約数和(自身を含む): 64431360

約数和(自身を除く): 38687720

約数列:

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

約数ペア:

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