20313489

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{1039}}^1$

素因数の和:1082

約数の個数: 32

約数和(自身を含む): 33280000

約数和(自身を除く): 12966511

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 343, 399, 931, 1029, 1039, 2793, 3117, 6517, 7273, 19551, 19741, 21819, 50911, 59223, 138187, 152733, 356377, 414561, 967309, 1069131, 2901927, 6771163, 20313489]

約数ペア:

[(1, 20313489), (3, 6771163), (7, 2901927), (19, 1069131), (21, 967309), (49, 414561), (57, 356377), (133, 152733), (147, 138187), (343, 59223), (399, 50911), (931, 21819), (1029, 19741), (1039, 19551), (2793, 7273), (3117, 6517)]