51808360

素因数分解:

$2^3\times 5^1\times {\mathrm{809}}^1\times {\mathrm{1601}}^1$

素因数の和:2421

約数の個数: 32

約数和(自身を含む): 116785800

約数和(自身を除く): 64977440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 809, 1601, 1618, 3202, 3236, 4045, 6404, 6472, 8005, 8090, 12808, 16010, 16180, 32020, 32360, 64040, 1295209, 2590418, 5180836, 6476045, 10361672, 12952090, 25904180, 51808360]

約数ペア:

[(1, 51808360), (2, 25904180), (4, 12952090), (5, 10361672), (8, 6476045), (10, 5180836), (20, 2590418), (40, 1295209), (809, 64040), (1601, 32360), (1618, 32020), (3202, 16180), (3236, 16010), (4045, 12808), (6404, 8090), (6472, 8005)]