19906456

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{743}}^1$

素因数の和:963

約数の個数: 32

約数和(自身を含む): 39774240

約数和(自身を除く): 19867784

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 197, 394, 743, 788, 1486, 1576, 2972, 3349, 5944, 6698, 12631, 13396, 25262, 26792, 50524, 101048, 146371, 292742, 585484, 1170968, 2488307, 4976614, 9953228, 19906456]

約数ペア:

[(1, 19906456), (2, 9953228), (4, 4976614), (8, 2488307), (17, 1170968), (34, 585484), (68, 292742), (136, 146371), (197, 101048), (394, 50524), (743, 26792), (788, 25262), (1486, 13396), (1576, 12631), (2972, 6698), (3349, 5944)]