21147266

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{743}}^1$

素因数の和:878

約数の個数: 32

約数和(自身を含む): 38568960

約数和(自身を除く): 17421694

約数列:

[1, 2, 7, 14, 19, 38, 107, 133, 214, 266, 743, 749, 1486, 1498, 2033, 4066, 5201, 10402, 14117, 14231, 28234, 28462, 79501, 98819, 159002, 197638, 556507, 1113014, 1510519, 3021038, 10573633, 21147266]

約数ペア:

[(1, 21147266), (2, 10573633), (7, 3021038), (14, 1510519), (19, 1113014), (38, 556507), (107, 197638), (133, 159002), (214, 98819), (266, 79501), (743, 28462), (749, 28234), (1486, 14231), (1498, 14117), (2033, 10402), (4066, 5201)]