21345855

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{38461}}^1$

素因数の和:38506

約数の個数: 16

約数和(自身を含む): 35077344

約数和(自身を除く): 13731489

約数列:

[1, 3, 5, 15, 37, 111, 185, 555, 38461, 115383, 192305, 576915, 1423057, 4269171, 7115285, 21345855]

約数ペア:

[(1, 21345855), (3, 7115285), (5, 4269171), (15, 1423057), (37, 576915), (111, 192305), (185, 115383), (555, 38461)]