218505511

素因数分解:

$7^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1\times {\mathrm{997}}^1$

素因数の和:1374

約数の個数: 16

約数和(自身を含む): 252933120

約数和(自身を除く): 34427609

約数列:

[1, 7, 131, 239, 917, 997, 1673, 6979, 31309, 130607, 219163, 238283, 914249, 1667981, 31215073, 218505511]

約数ペア:

[(1, 218505511), (7, 31215073), (131, 1667981), (239, 914249), (917, 238283), (997, 219163), (1673, 130607), (6979, 31309)]