18814019

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{4273}}^1$

素因数の和:4334

約数の個数: 16

約数和(自身を含む): 23387328

約数和(自身を除く): 4573309

約数列:

[1, 7, 17, 37, 119, 259, 629, 4273, 4403, 29911, 72641, 158101, 508487, 1106707, 2687717, 18814019]

約数ペア:

[(1, 18814019), (7, 2687717), (17, 1106707), (37, 508487), (119, 158101), (259, 72641), (629, 29911), (4273, 4403)]