21192805

素因数分解:

$5^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1\times {\mathrm{229}}^1$

素因数の和:540

約数の個数: 16

約数和(自身を含む): 25966080

約数和(自身を除く): 4773275

約数列:

[1, 5, 83, 223, 229, 415, 1115, 1145, 18509, 19007, 51067, 92545, 95035, 255335, 4238561, 21192805]

約数ペア:

[(1, 21192805), (5, 4238561), (83, 255335), (223, 95035), (229, 92545), (415, 51067), (1115, 19007), (1145, 18509)]