20972908

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{4373}}^1$

素因数の和:4497

約数の個数: 24

約数和(自身を含む): 40415760

約数和(自身を除く): 19442852

約数列:

[1, 2, 4, 11, 22, 44, 109, 218, 436, 1199, 2398, 4373, 4796, 8746, 17492, 48103, 96206, 192412, 476657, 953314, 1906628, 5243227, 10486454, 20972908]

約数ペア:

[(1, 20972908), (2, 10486454), (4, 5243227), (11, 1906628), (22, 953314), (44, 476657), (109, 192412), (218, 96206), (436, 48103), (1199, 17492), (2398, 8746), (4373, 4796)]