19515916

素因数分解:

$2^2\times 7^2\times {\mathrm{99571}}^1$

素因数の和:99589

約数の個数: 18

約数和(自身を含む): 39729228

約数和(自身を除く): 20213312

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 99571, 199142, 398284, 696997, 1393994, 2787988, 4878979, 9757958, 19515916]

約数ペア:

[(1, 19515916), (2, 9757958), (4, 4878979), (7, 2787988), (14, 1393994), (28, 696997), (49, 398284), (98, 199142), (196, 99571)]