258502480

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^2\times {\mathrm{641}}^1$

素因数の和:796

約数の個数: 60

約数和(自身を含む): 610553556

約数和(自身を除く): 352051076

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 641, 710, 1136, 1282, 1420, 2564, 2840, 3205, 5041, 5128, 5680, 6410, 10082, 10256, 12820, 20164, 25205, 25640, 40328, 45511, 50410, 51280, 80656, 91022, 100820, 182044, 201640, 227555, 364088, 403280, 455110, 728176, 910220, 1820440, 3231281, 3640880, 6462562, 12925124, 16156405, 25850248, 32312810, 51700496, 64625620, 129251240, 258502480]

約数ペア:

[(1, 258502480), (2, 129251240), (4, 64625620), (5, 51700496), (8, 32312810), (10, 25850248), (16, 16156405), (20, 12925124), (40, 6462562), (71, 3640880), (80, 3231281), (142, 1820440), (284, 910220), (355, 728176), (568, 455110), (641, 403280), (710, 364088), (1136, 227555), (1282, 201640), (1420, 182044), (2564, 100820), (2840, 91022), (3205, 80656), (5041, 51280), (5128, 50410), (5680, 45511), (6410, 40328), (10082, 25640), (10256, 25205), (12820, 20164)]