20409935

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1447}}^1$

素因数の和:1503

約数の個数: 32

約数和(自身を含む): 31137792

約数和(自身を除く): 10727857

約数列:

[1, 5, 7, 13, 31, 35, 65, 91, 155, 217, 403, 455, 1085, 1447, 2015, 2821, 7235, 10129, 14105, 18811, 44857, 50645, 94055, 131677, 224285, 313999, 583141, 658385, 1569995, 2915705, 4081987, 20409935]

約数ペア:

[(1, 20409935), (5, 4081987), (7, 2915705), (13, 1569995), (31, 658385), (35, 583141), (65, 313999), (91, 224285), (155, 131677), (217, 94055), (403, 50645), (455, 44857), (1085, 18811), (1447, 14105), (2015, 10129), (2821, 7235)]