19945772

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2089}}^1$

素因数の和:2142

約数の個数: 48

約数和(自身を含む): 44943360

約数和(自身を除く): 24997588

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 62, 77, 124, 154, 217, 308, 341, 434, 682, 868, 1364, 2089, 2387, 4178, 4774, 8356, 9548, 14623, 22979, 29246, 45958, 58492, 64759, 91916, 129518, 160853, 259036, 321706, 453313, 643412, 712349, 906626, 1424698, 1813252, 2849396, 4986443, 9972886, 19945772]

約数ペア:

[(1, 19945772), (2, 9972886), (4, 4986443), (7, 2849396), (11, 1813252), (14, 1424698), (22, 906626), (28, 712349), (31, 643412), (44, 453313), (62, 321706), (77, 259036), (124, 160853), (154, 129518), (217, 91916), (308, 64759), (341, 58492), (434, 45958), (682, 29246), (868, 22979), (1364, 14623), (2089, 9548), (2387, 8356), (4178, 4774)]