20977235

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 8053165

約数列:

[1, 5, 17, 19, 31, 85, 95, 155, 323, 419, 527, 589, 1615, 2095, 2635, 2945, 7123, 7961, 10013, 12989, 35615, 39805, 50065, 64945, 135337, 220813, 246791, 676685, 1104065, 1233955, 4195447, 20977235]

約数ペア:

[(1, 20977235), (5, 4195447), (17, 1233955), (19, 1104065), (31, 676685), (85, 246791), (95, 220813), (155, 135337), (323, 64945), (419, 50065), (527, 39805), (589, 35615), (1615, 12989), (2095, 10013), (2635, 7961), (2945, 7123)]