18819595

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 25850880

約数和(自身を除く): 7031285

約数列:

[1, 5, 17, 19, 43, 85, 95, 215, 271, 323, 731, 817, 1355, 1615, 3655, 4085, 4607, 5149, 11653, 13889, 23035, 25745, 58265, 69445, 87533, 198101, 221407, 437665, 990505, 1107035, 3763919, 18819595]

約数ペア:

[(1, 18819595), (5, 3763919), (17, 1107035), (19, 990505), (43, 437665), (85, 221407), (95, 198101), (215, 87533), (271, 69445), (323, 58265), (731, 25745), (817, 23035), (1355, 13889), (1615, 11653), (3655, 5149), (4085, 4607)]