19810994

素因数分解:

$2^1\times 7^3\times {\mathrm{28879}}^1$

素因数の和:28902

約数の個数: 16

約数和(自身を含む): 34656000

約数和(自身を除く): 14845006

約数列:

[1, 2, 7, 14, 49, 98, 343, 686, 28879, 57758, 202153, 404306, 1415071, 2830142, 9905497, 19810994]

約数ペア:

[(1, 19810994), (2, 9905497), (7, 2830142), (14, 1415071), (49, 404306), (98, 202153), (343, 57758), (686, 28879)]