28404549940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{997}}^1\times {\mathrm{8429}}^1$

素因数の和:9461

約数の個数: 72

約数和(自身を含む): 64663394040

約数和(自身を除く): 36258844100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 997, 1690, 1994, 3380, 3988, 4985, 8429, 9970, 12961, 16858, 19940, 25922, 33716, 42145, 51844, 64805, 84290, 109577, 129610, 168493, 168580, 219154, 259220, 336986, 438308, 547885, 673972, 842465, 1095770, 1424501, 1684930, 2191540, 2849002, 3369860, 5698004, 7122505, 8403713, 14245010, 16807426, 28490020, 33614852, 42018565, 84037130, 109248269, 168074260, 218496538, 436993076, 546241345, 1092482690, 1420227497, 2184965380, 2840454994, 5680909988, 7101137485, 14202274970, 28404549940]

約数ペア:

[(1, 28404549940), (2, 14202274970), (4, 7101137485), (5, 5680909988), (10, 2840454994), (13, 2184965380), (20, 1420227497), (26, 1092482690), (52, 546241345), (65, 436993076), (130, 218496538), (169, 168074260), (260, 109248269), (338, 84037130), (676, 42018565), (845, 33614852), (997, 28490020), (1690, 16807426), (1994, 14245010), (3380, 8403713), (3988, 7122505), (4985, 5698004), (8429, 3369860), (9970, 2849002), (12961, 2191540), (16858, 1684930), (19940, 1424501), (25922, 1095770), (33716, 842465), (42145, 673972), (51844, 547885), (64805, 438308), (84290, 336986), (109577, 259220), (129610, 219154), (168493, 168580)]