18295280

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3221}}^1$

素因数の和:3305

約数の個数: 40

約数和(自身を含む): 43149024

約数和(自身を除く): 24853744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3221, 5680, 6442, 12884, 16105, 25768, 32210, 51536, 64420, 128840, 228691, 257680, 457382, 914764, 1143455, 1829528, 2286910, 3659056, 4573820, 9147640, 18295280]

約数ペア:

[(1, 18295280), (2, 9147640), (4, 4573820), (5, 3659056), (8, 2286910), (10, 1829528), (16, 1143455), (20, 914764), (40, 457382), (71, 257680), (80, 228691), (142, 128840), (284, 64420), (355, 51536), (568, 32210), (710, 25768), (1136, 16105), (1420, 12884), (2840, 6442), (3221, 5680)]