21041493

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{907}}^1$

素因数の和:977

約数の個数: 32

約数和(自身を含む): 33123840

約数和(自身を除く): 12082347

約数列:

[1, 3, 11, 19, 33, 37, 57, 111, 209, 407, 627, 703, 907, 1221, 2109, 2721, 7733, 9977, 17233, 23199, 29931, 33559, 51699, 100677, 189563, 369149, 568689, 637621, 1107447, 1912863, 7013831, 21041493]

約数ペア:

[(1, 21041493), (3, 7013831), (11, 1912863), (19, 1107447), (33, 637621), (37, 568689), (57, 369149), (111, 189563), (209, 100677), (407, 51699), (627, 33559), (703, 29931), (907, 23199), (1221, 17233), (2109, 9977), (2721, 7733)]