5405140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20789}}^1$

素因数の和:20811

約数の個数: 24

約数和(自身を含む): 12224520

約数和(自身を除く): 6819380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 20789, 41578, 83156, 103945, 207890, 270257, 415780, 540514, 1081028, 1351285, 2702570, 5405140]

約数ペア:

[(1, 5405140), (2, 2702570), (4, 1351285), (5, 1081028), (10, 540514), (13, 415780), (20, 270257), (26, 207890), (52, 103945), (65, 83156), (130, 41578), (260, 20789)]