38161991

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 49102848

約数和(自身を除く): 10940857

約数列:

[1, 7, 17, 23, 73, 119, 161, 191, 391, 511, 1241, 1337, 1679, 2737, 3247, 4393, 8687, 11753, 13943, 22729, 28543, 30751, 74681, 97601, 199801, 237031, 320689, 522767, 1659217, 2244823, 5451713, 38161991]

約数ペア:

[(1, 38161991), (7, 5451713), (17, 2244823), (23, 1659217), (73, 522767), (119, 320689), (161, 237031), (191, 199801), (391, 97601), (511, 74681), (1241, 30751), (1337, 28543), (1679, 22729), (2737, 13943), (3247, 11753), (4393, 8687)]