20653437

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1399}}^1$

素因数の和:1465

約数の個数: 32

約数和(自身を含む): 34048000

約数和(自身を除く): 13394563

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 1399, 2109, 4197, 4921, 9793, 14763, 26581, 29379, 51763, 79743, 155289, 186067, 362341, 558201, 983497, 1087023, 2950491, 6884479, 20653437]

約数ペア:

[(1, 20653437), (3, 6884479), (7, 2950491), (19, 1087023), (21, 983497), (37, 558201), (57, 362341), (111, 186067), (133, 155289), (259, 79743), (399, 51763), (703, 29379), (777, 26581), (1399, 14763), (2109, 9793), (4197, 4921)]