180980440

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{8123}}^1$

素因数の和:8691

約数の個数: 32

約数和(自身を含む): 407987280

約数和(自身を除く): 227006840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 1114, 2228, 2785, 4456, 5570, 8123, 11140, 16246, 22280, 32492, 40615, 64984, 81230, 162460, 324920, 4524511, 9049022, 18098044, 22622555, 36196088, 45245110, 90490220, 180980440]

約数ペア:

[(1, 180980440), (2, 90490220), (4, 45245110), (5, 36196088), (8, 22622555), (10, 18098044), (20, 9049022), (40, 4524511), (557, 324920), (1114, 162460), (2228, 81230), (2785, 64984), (4456, 40615), (5570, 32492), (8123, 22280), (11140, 16246)]