19507865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 7103335

約数列:

[1, 5, 13, 29, 65, 79, 131, 145, 377, 395, 655, 1027, 1703, 1885, 2291, 3799, 5135, 8515, 10349, 11455, 18995, 29783, 49387, 51745, 134537, 148915, 246935, 300121, 672685, 1500605, 3901573, 19507865]

約数ペア:

[(1, 19507865), (5, 3901573), (13, 1500605), (29, 672685), (65, 300121), (79, 246935), (131, 148915), (145, 134537), (377, 51745), (395, 49387), (655, 29783), (1027, 18995), (1703, 11455), (1885, 10349), (2291, 8515), (3799, 5135)]