51787220

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{4027}}^1$

素因数の和:4679

約数の個数: 24

約数和(自身を含む): 108949344

約数和(自身を除く): 57162124

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 2572, 3215, 4027, 6430, 8054, 12860, 16108, 20135, 40270, 80540, 2589361, 5178722, 10357444, 12946805, 25893610, 51787220]

約数ペア:

[(1, 51787220), (2, 25893610), (4, 12946805), (5, 10357444), (10, 5178722), (20, 2589361), (643, 80540), (1286, 40270), (2572, 20135), (3215, 16108), (4027, 12860), (6430, 8054)]