1286801680

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1\times {\mathrm{853}}^1$

素因数の和:1148

約数の個数: 80

約数和(自身を含む): 3040274160

約数和(自身を除く): 1753472480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 173, 218, 346, 436, 545, 692, 853, 865, 872, 1090, 1384, 1706, 1730, 1744, 2180, 2768, 3412, 3460, 4265, 4360, 6824, 6920, 8530, 8720, 13648, 13840, 17060, 18857, 34120, 37714, 68240, 75428, 92977, 94285, 147569, 150856, 185954, 188570, 295138, 301712, 371908, 377140, 464885, 590276, 737845, 743816, 754280, 929770, 1180552, 1475690, 1487632, 1508560, 1859540, 2361104, 2951380, 3719080, 5902760, 7438160, 11805520, 16085021, 32170042, 64340084, 80425105, 128680168, 160850210, 257360336, 321700420, 643400840, 1286801680]

約数ペア:

[(1, 1286801680), (2, 643400840), (4, 321700420), (5, 257360336), (8, 160850210), (10, 128680168), (16, 80425105), (20, 64340084), (40, 32170042), (80, 16085021), (109, 11805520), (173, 7438160), (218, 5902760), (346, 3719080), (436, 2951380), (545, 2361104), (692, 1859540), (853, 1508560), (865, 1487632), (872, 1475690), (1090, 1180552), (1384, 929770), (1706, 754280), (1730, 743816), (1744, 737845), (2180, 590276), (2768, 464885), (3412, 377140), (3460, 371908), (4265, 301712), (4360, 295138), (6824, 188570), (6920, 185954), (8530, 150856), (8720, 147569), (13648, 94285), (13840, 92977), (17060, 75428), (18857, 68240), (34120, 37714)]