218215907

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1\times {\mathrm{307}}^1$

素因数の和:507

約数の個数: 32

約数和(自身を含む): 275692032

約数和(自身を除く): 57476125

約数列:

[1, 7, 13, 73, 91, 107, 307, 511, 749, 949, 1391, 2149, 3991, 6643, 7811, 9737, 22411, 27937, 32849, 54677, 101543, 156877, 229943, 291343, 427037, 710801, 2039401, 2397977, 2989259, 16785839, 31173701, 218215907]

約数ペア:

[(1, 218215907), (7, 31173701), (13, 16785839), (73, 2989259), (91, 2397977), (107, 2039401), (307, 710801), (511, 427037), (749, 291343), (949, 229943), (1391, 156877), (2149, 101543), (3991, 54677), (6643, 32849), (7811, 27937), (9737, 22411)]