278323480

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{114067}}^1$

素因数の和:114139

約数の個数: 32

約数和(自身を含む): 636499440

約数和(自身を除く): 358175960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 114067, 228134, 456268, 570335, 912536, 1140670, 2281340, 4562680, 6958087, 13916174, 27832348, 34790435, 55664696, 69580870, 139161740, 278323480]

約数ペア:

[(1, 278323480), (2, 139161740), (4, 69580870), (5, 55664696), (8, 34790435), (10, 27832348), (20, 13916174), (40, 6958087), (61, 4562680), (122, 2281340), (244, 1140670), (305, 912536), (488, 570335), (610, 456268), (1220, 228134), (2440, 114067)]