20657105

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{383}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 30081024

約数和(自身を除く): 9423919

約数列:

[1, 5, 7, 23, 35, 67, 115, 161, 335, 383, 469, 805, 1541, 1915, 2345, 2681, 7705, 8809, 10787, 13405, 25661, 44045, 53935, 61663, 128305, 179627, 308315, 590203, 898135, 2951015, 4131421, 20657105]

約数ペア:

[(1, 20657105), (5, 4131421), (7, 2951015), (23, 898135), (35, 590203), (67, 308315), (115, 179627), (161, 128305), (335, 61663), (383, 53935), (469, 44045), (805, 25661), (1541, 13405), (1915, 10787), (2345, 8809), (2681, 7705)]