16720765

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{937}}^1$

素因数の和:1068

約数の個数: 16

約数和(自身を含む): 20801088

約数和(自身を除く): 4080323

約数列:

[1, 5, 43, 83, 215, 415, 937, 3569, 4685, 17845, 40291, 77771, 201455, 388855, 3344153, 16720765]

約数ペア:

[(1, 16720765), (5, 3344153), (43, 388855), (83, 201455), (215, 77771), (415, 40291), (937, 17845), (3569, 4685)]