1991231180

素因数分解:

$2^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{193}}^1\times {\mathrm{3089}}^1$

素因数の和:3458

約数の個数: 48

約数和(自身を含む): 4229789760

約数和(自身を除く): 2238558580

約数列:

[1, 2, 4, 5, 10, 20, 167, 193, 334, 386, 668, 772, 835, 965, 1670, 1930, 3089, 3340, 3860, 6178, 12356, 15445, 30890, 32231, 61780, 64462, 128924, 161155, 322310, 515863, 596177, 644620, 1031726, 1192354, 2063452, 2384708, 2579315, 2980885, 5158630, 5961770, 10317260, 11923540, 99561559, 199123118, 398246236, 497807795, 995615590, 1991231180]

約数ペア:

[(1, 1991231180), (2, 995615590), (4, 497807795), (5, 398246236), (10, 199123118), (20, 99561559), (167, 11923540), (193, 10317260), (334, 5961770), (386, 5158630), (668, 2980885), (772, 2579315), (835, 2384708), (965, 2063452), (1670, 1192354), (1930, 1031726), (3089, 644620), (3340, 596177), (3860, 515863), (6178, 322310), (12356, 161155), (15445, 128924), (30890, 64462), (32231, 61780)]