18917948

素因数分解:

$2^2\times 7^1\times {\mathrm{557}}^1\times {\mathrm{1213}}^1$

素因数の和:1781

約数の個数: 24

約数和(自身を含む): 37935072

約数和(自身を除く): 19017124

約数列:

[1, 2, 4, 7, 14, 28, 557, 1114, 1213, 2228, 2426, 3899, 4852, 7798, 8491, 15596, 16982, 33964, 675641, 1351282, 2702564, 4729487, 9458974, 18917948]

約数ペア:

[(1, 18917948), (2, 9458974), (4, 4729487), (7, 2702564), (14, 1351282), (28, 675641), (557, 33964), (1114, 16982), (1213, 15596), (2228, 8491), (2426, 7798), (3899, 4852)]