257093440

素因数分解:

$2^6\times 5^1\times {\mathrm{803417}}^1$

素因数の和:803434

約数の個数: 28

約数和(自身を含む): 612204516

約数和(自身を除く): 355111076

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 803417, 1606834, 3213668, 4017085, 6427336, 8034170, 12854672, 16068340, 25709344, 32136680, 51418688, 64273360, 128546720, 257093440]

約数ペア:

[(1, 257093440), (2, 128546720), (4, 64273360), (5, 51418688), (8, 32136680), (10, 25709344), (16, 16068340), (20, 12854672), (32, 8034170), (40, 6427336), (64, 4017085), (80, 3213668), (160, 1606834), (320, 803417)]