2157982

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{521}}^1$

素因数の和:651

約数の個数: 16

約数和(自身を含む): 3445200

約数和(自身を除く): 1287218

約数列:

[1, 2, 19, 38, 109, 218, 521, 1042, 2071, 4142, 9899, 19798, 56789, 113578, 1078991, 2157982]

約数ペア:

[(1, 2157982), (2, 1078991), (19, 113578), (38, 56789), (109, 19798), (218, 9899), (521, 4142), (1042, 2071)]