398000001

素因数分解:

$3^1\times 7^2\times {\mathrm{1019}}^1\times {\mathrm{2657}}^1$

素因数の和:3693

約数の個数: 24

約数和(自身を含む): 618144480

約数和(自身を除く): 220144479

約数列:

[1, 3, 7, 21, 49, 147, 1019, 2657, 3057, 7133, 7971, 18599, 21399, 49931, 55797, 130193, 149793, 390579, 2707483, 8122449, 18952381, 56857143, 132666667, 398000001]

約数ペア:

[(1, 398000001), (3, 132666667), (7, 56857143), (21, 18952381), (49, 8122449), (147, 2707483), (1019, 390579), (2657, 149793), (3057, 130193), (7133, 55797), (7971, 49931), (18599, 21399)]