38868680

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{257}}^1$

素因数の和:486

約数の個数: 64

約数和(自身を含む): 92880000

約数和(自身を除く): 54011320

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 199, 257, 380, 398, 514, 760, 796, 995, 1028, 1285, 1592, 1990, 2056, 2570, 3781, 3980, 4883, 5140, 7562, 7960, 9766, 10280, 15124, 18905, 19532, 24415, 30248, 37810, 39064, 48830, 51143, 75620, 97660, 102286, 151240, 195320, 204572, 255715, 409144, 511430, 971717, 1022860, 1943434, 2045720, 3886868, 4858585, 7773736, 9717170, 19434340, 38868680]

約数ペア:

[(1, 38868680), (2, 19434340), (4, 9717170), (5, 7773736), (8, 4858585), (10, 3886868), (19, 2045720), (20, 1943434), (38, 1022860), (40, 971717), (76, 511430), (95, 409144), (152, 255715), (190, 204572), (199, 195320), (257, 151240), (380, 102286), (398, 97660), (514, 75620), (760, 51143), (796, 48830), (995, 39064), (1028, 37810), (1285, 30248), (1592, 24415), (1990, 19532), (2056, 18905), (2570, 15124), (3781, 10280), (3980, 9766), (4883, 7960), (5140, 7562)]