197397290

素因数分解:

$2^1\times 5^1\times {\mathrm{991}}^1\times {\mathrm{19919}}^1$

素因数の和:20917

約数の個数: 16

約数和(自身を含む): 355691520

約数和(自身を除く): 158294230

約数列:

[1, 2, 5, 10, 991, 1982, 4955, 9910, 19919, 39838, 99595, 199190, 19739729, 39479458, 98698645, 197397290]

約数ペア:

[(1, 197397290), (2, 98698645), (5, 39479458), (10, 19739729), (991, 199190), (1982, 99595), (4955, 39838), (9910, 19919)]