218615816

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{557}}^1\times {\mathrm{691}}^1$

素因数の和:1325

約数の個数: 32

約数和(自身を含む): 417026880

約数和(自身を除く): 198411064

約数列:

[1, 2, 4, 8, 71, 142, 284, 557, 568, 691, 1114, 1382, 2228, 2764, 4456, 5528, 39547, 49061, 79094, 98122, 158188, 196244, 316376, 384887, 392488, 769774, 1539548, 3079096, 27326977, 54653954, 109307908, 218615816]

約数ペア:

[(1, 218615816), (2, 109307908), (4, 54653954), (8, 27326977), (71, 3079096), (142, 1539548), (284, 769774), (557, 392488), (568, 384887), (691, 316376), (1114, 196244), (1382, 158188), (2228, 98122), (2764, 79094), (4456, 49061), (5528, 39547)]