21000786783

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{1283}}^1\times {\mathrm{2309}}^1$

素因数の和:3751

約数の個数: 32

約数和(自身を含む): 29897683200

約数和(自身を除く): 8896896417

約数列:

[1, 3, 17, 51, 139, 417, 1283, 2309, 2363, 3849, 6927, 7089, 21811, 39253, 65433, 117759, 178337, 320951, 535011, 962853, 2962447, 3031729, 5456167, 8887341, 9095187, 16368501, 50361599, 151084797, 411780133, 1235340399, 7000262261, 21000786783]

約数ペア:

[(1, 21000786783), (3, 7000262261), (17, 1235340399), (51, 411780133), (139, 151084797), (417, 50361599), (1283, 16368501), (2309, 9095187), (2363, 8887341), (3849, 5456167), (6927, 3031729), (7089, 2962447), (21811, 962853), (39253, 535011), (65433, 320951), (117759, 178337)]