280732991

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{20143}}^1$

素因数の和:20342

約数の個数: 16

約数和(自身を含む): 351955968

約数和(自身を除く): 71222977

約数列:

[1, 7, 11, 77, 181, 1267, 1991, 13937, 20143, 141001, 221573, 1551011, 3645883, 25521181, 40104713, 280732991]

約数ペア:

[(1, 280732991), (7, 40104713), (11, 25521181), (77, 3645883), (181, 1551011), (1267, 221573), (1991, 141001), (13937, 20143)]