19888323

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{277}}^1$

素因数の和:563

約数の個数: 32

約数和(自身を含む): 32879616

約数和(自身を除く): 12991293

約数列:

[1, 3, 7, 13, 21, 39, 91, 263, 273, 277, 789, 831, 1841, 1939, 3419, 3601, 5523, 5817, 10257, 10803, 23933, 25207, 71799, 72851, 75621, 218553, 509957, 947063, 1529871, 2841189, 6629441, 19888323]

約数ペア:

[(1, 19888323), (3, 6629441), (7, 2841189), (13, 1529871), (21, 947063), (39, 509957), (91, 218553), (263, 75621), (273, 72851), (277, 71799), (789, 25207), (831, 23933), (1841, 10803), (1939, 10257), (3419, 5817), (3601, 5523)]