2155497640

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{214691}}^1$

素因数の和:214953

約数の個数: 32

約数和(自身を含む): 4869214560

約数和(自身を除く): 2713716920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 214691, 429382, 858764, 1073455, 1717528, 2146910, 4293820, 8587640, 53887441, 107774882, 215549764, 269437205, 431099528, 538874410, 1077748820, 2155497640]

約数ペア:

[(1, 2155497640), (2, 1077748820), (4, 538874410), (5, 431099528), (8, 269437205), (10, 215549764), (20, 107774882), (40, 53887441), (251, 8587640), (502, 4293820), (1004, 2146910), (1255, 1717528), (2008, 1073455), (2510, 858764), (5020, 429382), (10040, 214691)]