20279441

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{317}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 27068160

約数和(自身を除く): 6788719

約数列:

[1, 7, 13, 19, 37, 91, 133, 247, 259, 317, 481, 703, 1729, 2219, 3367, 4121, 4921, 6023, 9139, 11729, 28847, 42161, 63973, 78299, 82103, 152477, 222851, 548093, 1067339, 1559957, 2897063, 20279441]

約数ペア:

[(1, 20279441), (7, 2897063), (13, 1559957), (19, 1067339), (37, 548093), (91, 222851), (133, 152477), (247, 82103), (259, 78299), (317, 63973), (481, 42161), (703, 28847), (1729, 11729), (2219, 9139), (3367, 6023), (4121, 4921)]