20804563192

素因数分解:

$2^3\times 7^1\times {\mathrm{1303}}^1\times {\mathrm{285119}}^1$

素因数の和:286435

約数の個数: 32

約数和(自身を含む): 44615577600

約数和(自身を除く): 23811014408

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 1303, 2606, 5212, 9121, 10424, 18242, 36484, 72968, 285119, 570238, 1140476, 1995833, 2280952, 3991666, 7983332, 15966664, 371510057, 743020114, 1486040228, 2600570399, 2972080456, 5201140798, 10402281596, 20804563192]

約数ペア:

[(1, 20804563192), (2, 10402281596), (4, 5201140798), (7, 2972080456), (8, 2600570399), (14, 1486040228), (28, 743020114), (56, 371510057), (1303, 15966664), (2606, 7983332), (5212, 3991666), (9121, 2280952), (10424, 1995833), (18242, 1140476), (36484, 570238), (72968, 285119)]