12129918125

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:484

約数の個数: 80

約数和(自身を含む): 16937115888

約数和(自身を除く): 4807197763

約数列:

[1, 5, 13, 25, 37, 65, 125, 157, 185, 257, 325, 481, 625, 785, 925, 1285, 1625, 2041, 2405, 3341, 3925, 4625, 5809, 6425, 8125, 9509, 10205, 12025, 16705, 19625, 23125, 29045, 32125, 40349, 47545, 51025, 60125, 75517, 83525, 98125, 123617, 145225, 160625, 201745, 237725, 255125, 300625, 377585, 417625, 524537, 618085, 726125, 1008725, 1188625, 1275625, 1492913, 1887925, 2088125, 2622685, 3090425, 3630625, 5043625, 5943125, 7464565, 9439625, 13113425, 15452125, 19407869, 25218125, 37322825, 47198125, 65567125, 77260625, 97039345, 186614125, 327835625, 485196725, 933070625, 2425983625, 12129918125]

約数ペア:

[(1, 12129918125), (5, 2425983625), (13, 933070625), (25, 485196725), (37, 327835625), (65, 186614125), (125, 97039345), (157, 77260625), (185, 65567125), (257, 47198125), (325, 37322825), (481, 25218125), (625, 19407869), (785, 15452125), (925, 13113425), (1285, 9439625), (1625, 7464565), (2041, 5943125), (2405, 5043625), (3341, 3630625), (3925, 3090425), (4625, 2622685), (5809, 2088125), (6425, 1887925), (8125, 1492913), (9509, 1275625), (10205, 1188625), (12025, 1008725), (16705, 726125), (19625, 618085), (23125, 524537), (29045, 417625), (32125, 377585), (40349, 300625), (47545, 255125), (51025, 237725), (60125, 201745), (75517, 160625), (83525, 145225), (98125, 123617)]