19191939

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 9838461

約数列:

[1, 3, 13, 29, 39, 71, 87, 213, 239, 377, 717, 923, 1131, 2059, 2769, 3107, 6177, 6931, 9321, 16969, 20793, 26767, 50907, 80301, 90103, 220597, 270309, 492101, 661791, 1476303, 6397313, 19191939]

約数ペア:

[(1, 19191939), (3, 6397313), (13, 1476303), (29, 661791), (39, 492101), (71, 270309), (87, 220597), (213, 90103), (239, 80301), (377, 50907), (717, 26767), (923, 20793), (1131, 16969), (2059, 9321), (2769, 6931), (3107, 6177)]