19995724

素因数分解:

$2^2\times 7^2\times {\mathrm{102019}}^1$

素因数の和:102037

約数の個数: 18

約数和(自身を含む): 40705980

約数和(自身を除く): 20710256

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 102019, 204038, 408076, 714133, 1428266, 2856532, 4998931, 9997862, 19995724]

約数ペア:

[(1, 19995724), (2, 9997862), (4, 4998931), (7, 2856532), (14, 1428266), (28, 714133), (49, 408076), (98, 204038), (196, 102019)]