1311389793

素因数分解:

$3^2\times 7^2\times {\mathrm{2973673}}^1$

素因数の和:2973693

約数の個数: 18

約数和(自身を含む): 2203492434

約数和(自身を除く): 892102641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 2973673, 8921019, 20815711, 26763057, 62447133, 145709977, 187341399, 437129931, 1311389793]

約数ペア:

[(1, 1311389793), (3, 437129931), (7, 187341399), (9, 145709977), (21, 62447133), (49, 26763057), (63, 20815711), (147, 8921019), (441, 2973673)]