30721803

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2081}}^1$

素因数の和:2147

約数の個数: 32

約数和(自身を含む): 50634240

約数和(自身を除く): 19912437

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 2081, 2109, 4921, 6243, 14567, 14763, 39539, 43701, 76997, 118617, 230991, 276773, 538979, 830319, 1462943, 1616937, 4388829, 10240601, 30721803]

約数ペア:

[(1, 30721803), (3, 10240601), (7, 4388829), (19, 1616937), (21, 1462943), (37, 830319), (57, 538979), (111, 276773), (133, 230991), (259, 118617), (399, 76997), (703, 43701), (777, 39539), (2081, 14763), (2109, 14567), (4921, 6243)]