81209560

素因数分解:

$2^3\times 5^1\times {\mathrm{373}}^1\times {\mathrm{5443}}^1$

素因数の和:5827

約数の個数: 32

約数和(自身を含む): 183245040

約数和(自身を除く): 102035480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 373, 746, 1492, 1865, 2984, 3730, 5443, 7460, 10886, 14920, 21772, 27215, 43544, 54430, 108860, 217720, 2030239, 4060478, 8120956, 10151195, 16241912, 20302390, 40604780, 81209560]

約数ペア:

[(1, 81209560), (2, 40604780), (4, 20302390), (5, 16241912), (8, 10151195), (10, 8120956), (20, 4060478), (40, 2030239), (373, 217720), (746, 108860), (1492, 54430), (1865, 43544), (2984, 27215), (3730, 21772), (5443, 14920), (7460, 10886)]