80775280

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14221}}^1$

素因数の和:14305

約数の個数: 40

約数和(自身を含む): 190461024

約数和(自身を除く): 109685744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 14221, 28442, 56884, 71105, 113768, 142210, 227536, 284420, 568840, 1009691, 1137680, 2019382, 4038764, 5048455, 8077528, 10096910, 16155056, 20193820, 40387640, 80775280]

約数ペア:

[(1, 80775280), (2, 40387640), (4, 20193820), (5, 16155056), (8, 10096910), (10, 8077528), (16, 5048455), (20, 4038764), (40, 2019382), (71, 1137680), (80, 1009691), (142, 568840), (284, 284420), (355, 227536), (568, 142210), (710, 113768), (1136, 71105), (1420, 56884), (2840, 28442), (5680, 14221)]