18991028

素因数分解:

$2^2\times 7^2\times {\mathrm{96893}}^1$

素因数の和:96911

約数の個数: 18

約数和(自身を含む): 38660706

約数和(自身を除く): 19669678

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 96893, 193786, 387572, 678251, 1356502, 2713004, 4747757, 9495514, 18991028]

約数ペア:

[(1, 18991028), (2, 9495514), (4, 4747757), (7, 2713004), (14, 1356502), (28, 678251), (49, 387572), (98, 193786), (196, 96893)]