1281967120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61871}}^1$

素因数の和:61928

約数の個数: 80

約数和(自身を含む): 3498490368

約数和(自身を除く): 2216523248

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 56, 70, 74, 80, 112, 140, 148, 185, 259, 280, 296, 370, 518, 560, 592, 740, 1036, 1295, 1480, 2072, 2590, 2960, 4144, 5180, 10360, 20720, 61871, 123742, 247484, 309355, 433097, 494968, 618710, 866194, 989936, 1237420, 1732388, 2165485, 2289227, 2474840, 3464776, 4330970, 4578454, 4949680, 6929552, 8661940, 9156908, 11446135, 16024589, 17323880, 18313816, 22892270, 32049178, 34647760, 36627632, 45784540, 64098356, 80122945, 91569080, 128196712, 160245890, 183138160, 256393424, 320491780, 640983560, 1281967120]

約数ペア:

[(1, 1281967120), (2, 640983560), (4, 320491780), (5, 256393424), (7, 183138160), (8, 160245890), (10, 128196712), (14, 91569080), (16, 80122945), (20, 64098356), (28, 45784540), (35, 36627632), (37, 34647760), (40, 32049178), (56, 22892270), (70, 18313816), (74, 17323880), (80, 16024589), (112, 11446135), (140, 9156908), (148, 8661940), (185, 6929552), (259, 4949680), (280, 4578454), (296, 4330970), (370, 3464776), (518, 2474840), (560, 2289227), (592, 2165485), (740, 1732388), (1036, 1237420), (1295, 989936), (1480, 866194), (2072, 618710), (2590, 494968), (2960, 433097), (4144, 309355), (5180, 247484), (10360, 123742), (20720, 61871)]